Passing a numerical reasoning test comes down to three things: knowing which math concepts appear most often, managing your time under pressure, and practicing with the right format before test day. These tests are used by employers during hiring to measure how quickly and accurately you can interpret data from tables, charts, and graphs. They are not advanced math exams. Most questions rely on percentages, averages, and ratios, applied to business-style data sets like sales figures, survey results, or financial reports.
Math Concepts You Need to Know
Numerical reasoning tests draw from a surprisingly small pool of math operations. If you can handle the following confidently, you have the toolkit for the vast majority of questions.
Percentages are the single most tested concept. You should be comfortable calculating a basic percentage (divide the value by the total, multiply by 100), finding a percentage change between two numbers, and working backwards from a result. Percentage change uses a simple formula: subtract the original number from the new number, divide by the original, and multiply by 100. A negative result means a decrease. You will also see questions where you’re given a value after a percentage increase or decrease and asked to find the original. For example, if a product costs $40 after a 20% reduction, the original price is $40 divided by 0.80, which is $50.
Averages appear in two forms. A standard average (or mean) is calculated by adding all values and dividing by the count. Weighted averages are trickier: they account for the fact that some values matter more than others. If 200 employees in one office earn an average of $45,000 and 50 employees in another earn an average of $60,000, you cannot simply average $45,000 and $60,000. You need to multiply each average by its group size, add those products together, then divide by the total number of employees.
Ratios tell you how quantities relate to each other. The key formula is: value equals the total divided by the sum of all ratio parts, then multiplied by the specific part you need. If 80 items are split in a 7:3 ratio, the larger group contains (80 / 10) x 7 = 56 items. Questions sometimes present ratios in a sentence rather than using a colon, so watch for phrasing like “for every three widgets sold, two were returned.”
Beyond these core three, brush up on basic multiplication and division, reading data from multi-row tables, converting units (thousands to millions, currencies, time periods), and simple rate calculations like cost per unit or output per hour.
What the Test Actually Looks Like
Most numerical reasoning tests present you with a data set, usually a table or chart, followed by multiple-choice questions about that data. The topics shift deliberately: one question might involve a company’s quarterly revenue, the next could cover population demographics, and the next might deal with telemarketing survey results. This rapid shifting is intentional. Employers want to see how quickly you can orient yourself to unfamiliar data and extract the right numbers.
Different employers use different test providers. SHL is one of the most common, with straightforward multiple-choice formats. Korn Ferry (Talent Q) tests are often adaptive, meaning the difficulty of each question adjusts based on whether you got the previous one right. Sova assessments also use adaptive testing. Aon (formerly Cut-e) sometimes incorporates game-based elements. Saville Assessments tends to use raw scores, while other providers factor in both speed and difficulty when ranking candidates. The practical takeaway: find out which provider your employer uses before you sit the test, then practice with that specific format. A Korn Ferry adaptive test feels quite different from a standard SHL assessment.
How to Manage Your Time
These tests give you only seconds per question, sometimes as few as 30 to 45. That pace means you cannot afford to spend two minutes on a single problem, even if you think you’re close to the answer. Build a habit during practice of glancing at the clock after each question. If you’ve spent more than a minute without clear progress, mark your best guess and move on. Many tests don’t penalize wrong answers, so leaving a question blank is almost always worse than guessing.
Estimation is your best friend when time is tight. If the answer choices are $4.2 million, $5.1 million, $7.8 million, and $9.3 million, you don’t need to calculate to the penny. Round the numbers in the table to make the arithmetic faster, get an approximate answer, and pick the closest option. Save precise calculation for questions where the answer choices are close together.
Mental arithmetic speed matters more than most people expect. Practice doing subtraction, multiplication, and division without a calculator in the weeks before the test. Even if a calculator is allowed, the time it takes to punch in numbers from a table adds up across 20 or 30 questions. Being able to quickly estimate that 47% of 800 is roughly 376 (half of 800 minus a small amount) will save you valuable seconds repeatedly.
Read Questions Before the Data
One of the most effective habits you can build is reading the question before you study the data set. Tables and charts in these tests often contain five or six columns and a dozen rows. If you read the entire table first, you waste time absorbing numbers you may not need. Reading the question first tells you exactly which column, which year, or which category to focus on.
Pay close attention to what the question is actually asking. Some questions deliberately include extra information to mislead you or make the problem seem harder than it is. A table might show revenue for five regions, but the question only asks about two of them. If you rush and pull in numbers from the wrong row, you will get the wrong answer even with perfect math. Watch especially for questions that ask for the difference, the ratio, or the percentage change rather than a raw value. It is easy to calculate the right number but answer the wrong question.
Units and Scale Traps
Misreading units is one of the fastest ways to lose points. Charts frequently label their axes in thousands or millions, which means a bar that appears to show “45” actually represents 45,000 or 45,000,000. If the question asks for an answer in a different unit than the chart displays, you need to convert. A table showing revenue in thousands of dollars paired with a question asking “how many millions” requires you to divide by 1,000, not just read the number off the table.
Time periods create similar traps. A table might show monthly figures while the question asks about a quarterly or annual total. Currency conversion questions sometimes appear as well, giving you an exchange rate in the data set and asking you to apply it. In every case, the math itself is straightforward. The challenge is noticing the mismatch before you calculate.
How to Practice Effectively
Practicing without simulating real conditions builds false confidence. When you do practice sets, always use a timer. Set it to match the pace of the actual test (if your test gives 25 minutes for 20 questions, practice at that same rate). After each practice session, review every question you got wrong or guessed on. Identify whether the mistake was a math error, a misread of the data, or a time management issue. Each type of mistake has a different fix.
Start your preparation at least two weeks before the test date if possible. Spend the first few days reviewing the core math concepts without time pressure so the formulas feel natural. Then shift to timed practice for the remaining days. Most test providers have official practice tests available on their websites, and your employer’s application portal will often link to sample questions for the specific test you will take.
If you find a particular question type consistently difficult, such as reverse percentages or weighted averages, isolate that topic and drill it separately. Ten focused minutes on one weak area will improve your score more than another full-length practice test where you breeze through the questions you already understand.
On Test Day
If the test is online and untimed for setup, make sure your environment is quiet and your internet connection is stable before you begin. Have a pencil and scratch paper ready, even if a calculator is provided. Writing out intermediate steps helps prevent errors when a question requires two or three calculations in sequence.
Work at a steady pace from the start. Many people spend too long on the first few questions because they want to get them right, then rush through the final questions when they realize time is running out. A consistent rhythm across the entire test produces better results than perfecting the first half and guessing the second. If you encounter a question that looks unusually complex, skip it, finish the others, and return to it if time allows.