Interview Math Practice, Formulas, Tricks, and Tips

Imagine sitting across from an interviewer who asks you to size a market, forecast revenue, and find the fastest path to profit in ten minutes. In Consulting Case Frameworks, strong math turns structure into clear, persuasive answers while shaky calculations leave you guessing.

This guide provides focused case interview math practice, including mental math drills, estimation routines, percent and ratio shortcuts, unit economics checks, breakeven calculations, and data interpretation tips, all designed to build speed, accuracy, and confidence on quantitative problems. Ready to stop freezing on numbers and start solving them with calm and control?CaseTutor's solution, land your dream job, offers realistic practice cases, step-by-step feedback, and timed drills that mirror real interviews so you can master the math parts and walk in ready.

Understanding Case Interview Math

Understanding Case Interview Math

Case interview math practice checks how you turn numbers into business insight. Interviewers look for speed with mental math, clarity in structuring calculations, and the ability to interpret results for a client. They want to see that you can estimate market size, test cost levers, compare pricing options, and forecast profitability while explaining tradeoffs. Ask yourself: can you show the math and then explain what the numbers mean for a decision?

Core Categories You Will Face in Cases

Market sizing and estimation problems involve using both top-down and bottom-up approaches—operational and efficiency calculations such as unit costs, throughput, waste rates, and headcount productivity. Financial decision math encompasses various concepts, including ROI, payback period, break-even, contribution margin, and simple valuation drivers. Each category maps to key consulting tools like unit economics, revenue modeling, sensitivity analysis, and profitability analysis.

A Clear Step-by-step Method to Handle Math in a Case

Start by restating the numeric goal and any assumptions aloud. Sketch the structure you will use, labeling intermediates like population segments, penetration rates, or cost per unit. Compute carefully using mental math, rounding to keep speed without losing signal. Report the answer with units and a short business implication, such as impact on revenue or feasibility. Then propose the following quick checks or sensitivity tests to validate robustness.

Key Formulas and Concepts Every Candidate Should Memorize

Key concepts include percent change, contribution margin (price minus variable cost), break point (fixed cost divided by contribution per unit), ROI (gain from investment over cost of investment), CAGR for growth rates, and simple discounted cash flow ideas for basic NPV thinking. Add ratios like gross margin, operating margin, and customer acquisition cost to lifetime value comparisons. Practice these until you can pull them up instantly during case interview math practice.

Mental Math and Rounding Tricks That Save Time

Split numbers into friendly chunks: 48 times 25 becomes 50 times 25 minus 2 times 25. Use 10 percent and 1 percent as building blocks for percentage tasks. Round to two significant digits for quick feasibility checks, then refine. Keep track of scale words like thousands versus millions so you do not misplace zeros. These habits make case math calculations both faster and more accurate.

How to Narrate Calculations While Staying Persuasive

Speak the plan before you compute. State the assumptions and highlight the estimated numbers. When you finish, translate the numeric result into an action, such as how many stores to open, whether a price increase will hurt demand, or how much cost-cutting is required to hit a target margin. Interviewers watch for logical flow from numbers to recommendations as much as they watch for numeric accuracy.

Common Mistakes and How to Avoid Them

Units are lost by dropping thousands or millions. Building overly complex models when a back-of-the-envelope estimate suffices. Hiding assumptions instead of stating them. Rely on multiple quick checks, label units on every line, and keep models compact so you can defend each input during the discussion.

Sample Practice Drill You Can Do in 10 Minutes

Estimate the annual revenue for a city with 1 million people, assuming 30 percent of the population are target customers, and 20 percent of those customers make a purchase once per month at $15 per purchase. Write the steps, compute mentally using rounding, and state the result as a revenue range. Then test sensitivity by changing the penetration by plus or minus five percentage points. Practice these drills daily to build speed and confidence.

Resources and Routines for Sustained Case Interview Math Practice

Use timed drills that mix market sizing, unit economics, and break-even problems. Work with a partner who probes your assumptions and asks for intermediate numbers. Keep a short cheat sheet of core formulas and mental math patterns. Track error types so you can focus practice on the skills that slow you down, whether that is percent changes, multiplication shortcuts, or keeping units straight.

A Quick List of Prompts to Train Interpretation Skills

How does a 10 percent price increase affect volume and margin? If fixed costs rise by 20 percent, what must unit sales do to keep operating profit flat? Which metric would you track first to know if your recommendation is working? Use these prompts during practice to force linking numbers to business outcomes.

Related Reading

• •Consulting Case Frameworks
• •Bcg Case Interview Prep
• •Why Consulting Interview Question
• •How to Break Into Consulting

Key Case Interview Math Formulas You Must Know

Key Case Interview Math Formulas You Must Know

1. Revenue

Revenue is the total income generated from selling goods or services. It’s calculated by multiplying the quantity sold by the price per unit.

Formula

• •Revenue = Volume × Price

2. Cost

Total cost comprises fixed costs (which remain constant regardless of production volume) plus variable costs (which change with output).

Formula

• •Cost = Fixed Cost + Variable Cost

3. Profit

Profit is the financial gain after deducting all costs from revenue. It represents the earnings a company keeps.

Formula

• •Profit = Revenue − Cost

4. Profit Margin

Profit margin measures profitability as a fraction of revenue, showing how much profit a company retains from its sales.

Formula

• •Profit margin = Profit / Revenue

5. Return on Investment (ROI)

ROI assesses how effectively an investment generates profit annually relative to the initial capital outlay.

Formula

• •ROI=Annual Profit / Initial Investment

6. Breakeven or Payback Period

This indicates how long it takes for an investment to repay its initial cost through profits.

Formula

• •Breakeven Period = Initial Investment / Annual Profit

Optional but Useful Formulas

While not always mandatory, understanding these additional formulas can enrich your business acumen and help in more complex cases.

7. EBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization)

EBITDA represents operating profitability by adding back non-operating expenses (interest, taxes) and non-cash charges (depreciation, amortization) to net profit. It helps compare companies across sectors with differing capital structures and tax environments.

Conceptual formula:

• •EBITDA = Net Profit + Interest + Taxes + Depreciation + Amortization

8. Net Present Value (NPV)

NPV calculates the current value of future cash inflows discounted by a specific rate, helping decide between financial alternatives over time. For example, choosing between two payment options occurring in different years.

General Idea

• •NPV = ∑ Future Cash Flow / (1+r)t

Where:

• •“r” is the discount rate, and
• •“t” is the time period

9. Return on Equity (ROE)

ROE is a measure of profitability relative to shareholder equity, revealing how effectively a company uses investments to generate earnings.

Formula

• •ROE = Profit / Shareholder Equity

10. Return on Assets (ROA)

ROA measures profit relative to total assets, indicating how efficiently a company uses its assets to produce profit.

Formula

• •ROA = Profit / Total Assets

Case Interview Math Practice Questions

Case Interview Math Practice Questions

How Fast Do You Get Your Money Back? Payback Period for Investments

Work from the incremental cash flows. Start by listing all upfront investments and the annual net increase in cash from the project. Yearly net cash equals additional revenue minus additional operating costs and any recurring investments. Then accumulate year by year until the cumulative cash flow equals the initial outlay.

Example Math in Practice

A client spends $ 1.2 million on IT, $300,000 on training, $500,000 on remodeling, and $200,000 on inventory, totaling $2.2 million. After changes, revenue rises 10 percent on a 10 million base, so incremental revenue equals 1.0 million. Annual additional operating costs increase by 150 thousand. Yearly net cash is 850 thousand. Payback equals initial 2.2 million divided by 850 thousand, roughly 2.6 years. Check with a year-by-year cumulation: year one $850 thousand, year two $1.7 million, year three $2.55 million, so payback happens during year three.

Quick Checks

round numbers to verify scale, compare payback to project lifespan, and test sensitivity to smaller revenue increases or higher running costs. Want a faster way to estimate payback in live interviews?

How Much Do You Save If Costs Drop? Cost Reduction Analysis

Frame the problem with population, current cost per unit, percent reduction, and adoption or reach. Multiply through with precise units. If costs only change for a subset, handle each segment separately and then sum.

Example Math

2 million households pay $12 per month for a pickup service, or $144 per year. A new distribution method reduces costs by 30 percent for half the households in year one and reaches all households by year three. Year one savings for reached households: 1 million times 144 times 0.30 equals 43.2 million. Rolling this forward with adoption gains gives total savings over multiple years. Convert monthly to annual early to avoid unit errors.

Use percentage arithmetic to simplify. For instance, a 30 percent reduction on 144 equals subtracting 43.2, leaving 100.8 per household per year. That kind of cancellation saves time and reduces mistakes. How would you split the population if adoption differs by region or income bracket?

Find the Market Share You Must Win to Break Even

Use contribution margin and fixed cost logic. Contribution per unit equals price minus variable cost. Required units equal fixed costs divided by contribution per unit. Market share equals required units divided by total market units.

Example Math

Fixed costs are 20 million, product price is $ 100, variable cost is $ 60, so the contribution per unit is $ 40. Required units, including 20 million, divided by 40 equals 500 thousand units. If the market size is 1.2 million units per year, the break-even market share equals 500 thousand divided by 1.2 million, about 42 percent.

Run Sensitivity Checks

What if the price falls by 10 percent or variable costs climb 5 percent? Recompute the contribution and see how the required units move. How would seasonal demand or cannibalization change the calculation?

Compare Prices by Calculating Total Cost of Ownership

Break the total cost of ownership into clear parts. Typical items include the purchase price, depreciation, fuel or energy cost per mile or hour, maintenance per period, operator or driver cost, and residual value. Convert everything to a standard unit, such as cost per year or cost per kilometer, and then compare the options.

Example Math

Truck alternative A costs $80,000 new and depreciates to $20,000 over five years, so depreciation equals $12,000 per year. Fuel cost is 0.40 per kilometer at 30 thousand kilometers per year, which equals 12 thousand, and maintenance is 3 thousand per year. The driver or operator is allocated a cost of 25 thousand per year. Total annual cost equals 52 thousand. If a competitor offers a leased option with lower upfront cost but higher fuel and maintenance, compute their annual total and compare.

To match a competitor's total cost per kilometer, set the price per delivered kilometer to the competitor's total plus the desired margin. What do small changes in fuel price do to the parity price?

Projecting Hires to Meet Diversity Goals

Model the pipeline step by step. Start with current counts by level and gender. Add promotion probability, attrition rates, and hiring policies. Project forward year by year to identify the gap, and then calculate the hires required to meet the target ratio.

Example Math

A company has 200 managers, 30 percent of whom are women, which equals 60 women. The company aims to have 40 percent women in its workforce within three years. Assume an annual attrition of 10 percent for all managers, and promotion inflow is negligible without new hires. If no hires occur, after one year, managers equal 180, with women dropping to 54 if attrition is proportional.

To reach 40 percent of the projected manager pool in year three, compute the required number of female hires and male hires that align with promotion and retention assumptions. For a target of 40 percent among the 150 expected managers in year three, you need 60 women. If projections without hires give 45 women, then hire 15 female managers over the period.

State Assumptions Clearly

Ask the interviewer if promotions or targeted programs change the pipeline numbers.

What Sales Volume Covers Opening a New Shop? Break-Even for Retail Operations

Compute the contribution per unit, then divide fixed costs by that contribution to get the units to break even. Include one-time opening costs and the first year of operating fixed costs to capture first-year risk.

Example Math

Price per cup = $3.50, variable cost per cup = $1.20, contribution per cup = $2.30. The opening costs are $12,000, and the first year's fixed rent and staff costs total $48,000, making the total fixed costs $60,000. Units to break even, such as 60 thousand divided by 2.30, equals about 26 thousand cups in year one, or roughly 100 cups per day. If the average ticket includes pastries, adjust the contribution per transaction rather than per cup.

Quick Sanity Check

Multiply target units by price to estimate revenue and confirm it fits local foot traffic and hours of operation.

Compare Two Promotion Options with Revenue Modeling

Lay out customer counts, average customer spend, frequency, discount levels, and any fee revenue. Convert behavioral changes into percentage shifts and then compute expected revenue under each scenario.

Example Math

10,000 customers spend an average of $ 50 a year; the average equals $500,000 in revenue. Option A charges a $20 membership fee and gives 10 percent off. If 30 percent sign up, membership revenue equals 3,000 times 20, which equals 60,000. Discount reduces spend per member by 10 percent but increases purchase frequency by 20 percent.

If member annual spend moves from 50 to 54 (net effect of more visits but lower per transaction), multiply members by the new spend, then add membership fees. Option B runs quarterly sales with 20 percent off for one week, which lifts weekly transactions by 50 percent but only for 4 weeks. Compute incremental revenue for each quarter and annualize.

Compare net revenue and then look at profit impact by subtracting incremental variable costs tied to higher volume. Ask whether the marketing budget or long-term retention changes, which option wins.

How to Practice Case Interview Math So You Win the Numbers Game

Use a repeatable four-step approach during cases: define the question, set variables and units, run arithmetic and show work, and interpret with sensitivity checks. Practice mental arithmetic drills for multiplication, division fractions, and percent conversions. Use timed practice where you compute under pressure and speak aloud to mirror interview conditions.

Techniques to speed calculations include rounding paired with correction, cancelling common factors, converting percentages to decimals early, and using per-unit rates like cost per month or per year to avoid unit errors. Build templates for everyday tasks such as payback, break-even, contribution margin, and present value approximations.

When you practice, track error sources. Are you losing time copying numbers, forgetting units, or mixing monthly and annual figures? Fix the single biggest recurring mistake and then add complexity like multi-segment populations or staged rollouts. Want a quick drill to run right now to improve mental math and case interview accuracy?

Related Reading

• •Capital One Case Interview
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Case Math Apps and Tools

Case Math Apps and Tools

Quick Overview: What These Math Apps Do for Case Prep

Case math apps train candidates on the two tasks they face in case interviews: setting up the correct equations and executing calculations quickly and accurately. They force repetition of additions, subtractions, multiplications, divisions, percentages, ratios, and unit conversions so number sense becomes automatic under pressure. Do you want faster mental calculation, cleaner back-of-the-envelope estimates, or better percent and ratio intuition for pricing and margin questions?

Mental Math as a Skill: Train the Number Muscle

Mental math behaves like a muscle you have to work every day. Short, focused drills build speed and reduce careless errors in multiplication, division, and percent work. Practice also sharpens estimation, rounding, significant figure control, and the habit of keeping numbers simple during a case guesstimate. Which of those areas slows you down the most right now?

How to Build Mental Calculation Speed: Practical Drills and Shortcuts

Use timed drills and pattern practice. Work sets of 30 to 60 seconds for simple multiplication and division, then increase complexity. Learn a handful of shortcuts: multiply by 5 as half of 10x; multiply by 4 by doubling twice; use front-end estimation and compensate with minor adjustments; convert percentages to fractions for quick work; break large numbers into round chunks. Practice rounding and then pay so your estimates stay within useful error bands for market sizing and margin calculations.

Recommended Learning Resources for Refreshing Basics

Khan Academy covers arithmetic, percentages, fractions, and scientific notation in compact modules that work well as a refresher. Pair that foundation with case-specific drills on web tools and mobile apps to move from pure arithmetic to business case math problems. Want a quick routine? Spend 10 minutes on fundamentals, then 15 minutes on timed case style problems.

What to Look for in Case Math Apps

Prioritize apps that give instant answer checking, let you toggle between exact calculation and estimation modes, and offer configurable difficulty and timed drills. Offline capability keeps practice flexible. Look for progress tracking, step explanations when you miss an answer, and sets that mirror case tasks like market sizing, margin analysis, break-even, and unit economics. Does the app simulate pressure with timers and varied question types?

Top Case Math Apps and Tools You Should Try

1. Preplounge Math Tool

Web-based, built for consulting candidates. Good mix of exact calculations and estimation practice tailored to case interview math practice.

2. Victor Cheng’s Math Tool (caseinterview.com)

Focused on consulting style drills. Compelling content, though the interface is more utilitarian for some users.

3. Mental Math Cards Challenge (iOS)

Mobile flashcard-style practice that fits short daily drills. Simple visuals keep focus on speed and accuracy.

4. Mental Math Games (Android)

An engaging alternative for Android users with varied drills and tricks for building number sense.

Use these alongside physical flashcards or a small notebook to track typical errors like unit mistakes, decimal misplacement, or incorrect rounding.

How to Use These Tools in Case Interview Practice

Integrate short math sessions into mock interviews and case runs. Start each mock with a five-minute math warm-up. During cases, force yourself to state each rounding step and the expected precision so interviewers hear your thinking track, timing, and error patterns to target drills to the weakest skills.

Practice Plans That Work

Try a six-week plan. Weeks 1 and 2 focus on arithmetic drills and percent shortcuts. Weeks 3 and 4 add timed estimation and market sizing. Weeks 5 and 6 simulate full cases with math under pressure. Keep sessions short and frequent. Which plan matches your calendar and time available per day?

Skip the $5,000 case coach and land your dream job. CaseTutor provides fully conversational AI interviews that closely mimic real-life McKinsey, BCG, and Bain sessions, complete with personalized feedback reports and a custom roadmap to address your weak spots. Practice over 100 realistic cases, receive personalized feedback, and master thinking out loud without paying for human coaches.

Case Interview Math Tips and Tricks

Case Interview Math Tips and Tricks

Calculators Are Usually Not Permitted

In case interviews, calculators are rarely allowed, whether the interview is conducted in person or online. This rule means you must perform calculations mentally or with minimal scratch work. Developing quick and accurate mental math skills is, therefore, essential to navigate these interviews effectively.

Round Numbers to Enhance Speed and Maintain Accuracy

Rounding numbers is a powerful mental math tool, but it requires balance. Over-rounding can distort the final results, potentially drawing corrections from your interviewer. A good guideline is to avoid rounding numbers by more than 10%. When multiplying two numbers, round one up and the other down so the rounding effects offset each other, preserving accuracy. For example, if multiplying A by B, round A upward and B downward.

Abbreviate Large Numbers Using Labels or Scientific Notation

Dealing with large numbers cluttered with zeros can be cumbersome. To simplify, label thousands as “k,” millions as “m,” and billions as “b.” For instance, instead of writing 20,000 × 6,000,000, represent it as 20k × 6m, which equals 120b. When labels aren't sufficient, apply scientific notation to break numbers down into a multiple of a base and a power of ten, making mental multiplication and division much easier.

Use Factoring to Break Down Complex Problems

Factoring transforms complex multiplications and divisions into more straightforward calculations by breaking numbers into their components. Some standard numbers frequently appear in case interviews, such as 5, 15, 25, 50, and 7, 5 and can be factored cleverly. For example, multiplying by 25 can be handled by dividing by 4 and then multiplying by 100. Similarly, dividing by 25 can be reversed by dividing by 100 and multiplying by 4. Factoring the numerator or denominator in division problems can also reduce complexity and speed up calculations.

Expand Numbers Through Addition or Subtraction for Simpler Calculations

Expanding one number in a calculation into a sum or difference of smaller numbers allows you to use more straightforward mental math steps. For instance, multiplying 68 by 35 can be done by splitting 35 into 10 + 25 and then multiplying 68 by each part before adding the results. Alternatively, expanding through subtraction, such as representing 68 × 35 as (70 − 2) × 35, can be especially helpful when one number is near a round figure. This technique breaks down challenging problems into smaller, manageable chunks.

Simplify Growth Rate Calculations with Multiplication and Estimation

Growth rates often appear in case interviews, and calculating compound growth precisely can be time-consuming. A practical method is to multiply growth factors and subtract one to find the combined growth. For example, a 20% growth followed by 10% yields a total of 32% growth ((1.2 × 1.1) − 1 = 0.32). This method applies even when one of the growth rates is negative. For more extended periods, estimation works well by multiplying the annual growth rate by the number of years to approximate total growth. This approach is efficient and sufficiently accurate for interview settings.

Memorize Key Statistics for Faster Problem Solving

Having specific baseline statistics memorized, such as city or country populations, enables you to make quicker, better-informed estimates during case interviews, particularly in market sizing questions. Knowing these key numbers in advance removes guesswork and boosts your confidence when performing related calculations.

Tips for Practising Case Interview Maths

Tips for Practising Case Interview Maths

Practice Under Realistic Interview Conditions

It is essential to work through math formulas actively during case interview preparation. However, practicing calculations under timed, simulated interview conditions significantly enhances readiness. This simulation builds confidence and ensures familiarity with the pressure of responding without a calculator, relying only on pen and paper or mental math. Practicing in real interview conditions is much more effective than passive review alone.

Practice with Peers for Initial Drills

Practicing with friends or peers who are also preparing for case interviews can be a useful, cost-effective start. Mock interviews among peers help build familiarity with question types and the flow of calculations. However, peer feedback can lack accuracy, insider company knowledge, or reliability, as people may not always be fully committed. For this reason, peer sessions are often supplemented or replaced by coaching with experts.

Work with Experienced Interviewers or Coaches

To gain precise, company-specific insights and authentic interview practice, it is highly recommended to work with experienced MBB (McKinsey, BCG, Bain) interviewers or specialized consulting interview coaches. These experts provide accurate feedback, teach compelling storytelling alongside the math, and enhance confidence by simulating real assessment conditions. Coaching helps focus preparation, saving time and improving effectiveness.

Master Basic Mental Math and Formulas

Solid mastery of core operations like multiplication, division, addition, and subtraction, along with key fractions and percentages, forms the foundation for case interview math. Since calculators are usually not allowed, learning mental math shortcuts (such as breaking down complex calculations into more manageable chunks or applying multiplication shortcuts) accelerates problem-solving and reduces errors.

Structure Calculations Clearly and Check Your Work

It is essential to keep your math organized and legible, using clean paper, circling key numbers for reference, and boxing answers. Always perform a quick sense check by ensuring your answer has the correct magnitude or order (e.g., recognizing if a number is unexpectedly large or small). Talking through your calculations aloud demonstrates your thought process and helps catch mistakes early.

Develop a Step-by-Step Approach to Problem Solving

When solving case math problems, start by structuring your approach out loud, clarifying any uncertainties with the interviewer. Then, carefully perform calculations, sense-check results, and interpret what the math means for the underlying business problem. This demonstrates strong analytical skills beyond mere arithmetic, showing your consulting mindset.

Consistent, Varied Practice

Practice regularly using diverse drills, including mental math exercises, business formulas, and case practice problems involving market sizing, profitability, or growth calculations. Variety in practice helps you become adaptable and quick at applying math in different contexts, from break-even analysis to interpreting charts and graphs.

By combining focused formula study, peer practice, expert coaching, mental math skill-building, structured problem-solving, and thorough review, candidates can vastly improve their proficiency and confidence in case interview math.

Want a quick drill right now? Time yourself doing ten percent conversions and three compound growth problems in under ten minutes.

Get your Dream Job with the help of CaseTutor.

CaseTutor provides fully conversational AI interviews that closely mimic real-life McKinsey, BCG, and Bain sessions. The system simulates an interviewer, prompts you to think out loud, and challenges you with realistic business problems. You receive a personalized feedback report after every session, along with a custom roadmap targeting the exact weak spots identified by the AI. Practice with 100-plus realistic cases and focus on the math and communication that determine offers. Which role are you preparing for right now?

How the AI Interview Feels Like the Real Thing

You speak, explain, and compute in real time while the AI interrupts, probes, and requests clarifications the way senior consultants do. It times your answers and forces quick arithmetic under pressure so your mental math, estimation, and number sense improve where it matters. The system also logs your transcript and highlights missed assumptions, inaccurate calculations, and weak framework choices, allowing you to review mistakes and repeat targeted drills. Want to see a sample mock interview before you try one?

Where Case Interview Math Practice Gets Practical

Train on the exact skills interviewers test, including quick arithmetic, percent change, ratio and proportion, unit conversion, break-even and margin calculations, market sizing, profitability analysis, growth rates and compound growth, and back-of-the-envelope estimates. Practice mental arithmetic for multiplication and division tricks, rounding strategies, and fraction to decimal conversions. Run timed drills for speed and accuracy, practice calculator-free problem solving, and build spreadsheet fluency for post-interview analytics. How often do you want to run timed math drills each week?

Feedback and The Custom Roadmap That Fixes Fundamental Eeaknesses

After each session, you receive a feedback report with concrete error types, time breakdowns, and a priority list of drills. The roadmap prescribes targeted practice modules, such as mental math drills, percent and ratio exercises, market sizing cases, and profitability walkthroughs. It recommends frequency, sets scoring goals, and tracks your improvement across numerical reasoning, data interpretation, and clear communication. You see which formulas you stumble on and which shortcuts save time.

Practice Modes that Match Different Needs

Choose mock interview mode for full simulation, drill mode for focused math practice, or analytics mode to work on chart reading and data interpretation. Adaptive difficulty raises complexity as you improve, so you face more challenging estimation problems, multi-step profitability scenarios, and layered market sizing questions when you are ready. Use the feedback loop to correct recurring mistakes and to schedule repeating practice for weak areas.

Why Does This Beat Static Case Books and Expensive Human Coaches

Human coaches can teach structure, but they cost thousands and do not scale practice volume. Static case books provide examples but lack pressure, interruption, and instant feedback on math performance. CaseTutor combines high-fidelity role play with targeted mental math training, timed practice, and diagnostic feedback so you build speed, accuracy, and the habit of thinking out loud.

Pricing and Getting Started

Skip the $5,000 coach and choose a plan that fits how much practice you need. Begin with a low-commitment plan, starting with mock interviews and math drills, and then increase the session volume as your report highlights new weak spots. Set up a schedule, commit to regular timed practice, and let the roadmap push you toward consistent improvement.

Practical Tips to Speed up Your Case Interview Math

Practice five-minute calculation drills for multiplication and division. Use rounding to simplify the percent change and then adjust with simple correction steps. Memorize a short set of base conversions and standard market size benchmarks. Time every practice, correct errors in the transcript, and repeat the same case after targeted drills to measure gains in speed and accuracy. Which tip do you want to try first?

Related Reading

• •Types of Consulting Cases
• •Management Consulting Interview Questions
• •Best Consulting Case Prep Books