Numerical reasoning: the formats of a hiring test and how to practice

Reviewed: October 2026

A numerical reasoning test is not an advanced math exam: it sets problems with numbers that you solve by reasoning with the data you are given. Depending on the company, it can bring one or more of these five formats: applied calculation, tables and charts, number series, probability and estimation. This guide describes each one, what it is not and how to practice it with original exercises.

The five formats it can bring

Each format asks for something different. The name of the test and the mix of formats vary by company and role, so it is worth confirming in your invitation which parts it includes.

  • Applied calculation: arithmetic in real-world situations, with percentages, ratios, interest, rates and speed. Sometimes data sufficiency questions are added, in which you judge whether the given information is enough to answer without actually solving.
  • Tables and charts: accurately reading and reasoning about numbers presented in tables, charts and diagrams, including catching when a chart's scale or framing is misleading.
  • Number series: spotting the hidden rule behind a list of numbers from just a handful of examples and finding the next term.
  • Probability: combinatorics, conditional probability and resistance to common intuitive traps, such as ignoring base rates.
  • Order of magnitude estimation: breaking an unknown, hard-to-look-up quantity into smaller estimable pieces and combining them to land within the right range without exact data. They are called Fermi problems, after the physicist Enrico Fermi, who posed this kind of question to his students.

How to practice each format here

Each format has its own category on this site, with original exercises and a guide on how to solve each type: quantitative aptitude for applied calculation, data interpretation for tables and charts, numerical sequences for series, probability reasoning for probability and estimation reasoning for Fermi problems.

Every test has a practice mode, which shows you the correct answer and an explanation after each question, and an exam mode, which gives no hints until the end, as in a real test. Once you know the formats, take the mock exam, which combines several categories with a time limit. Practice helps you recognize the type of question and manage your time, but it does not promise you a result.

Which tests include it

Many hiring aptitude tests include a numerical reasoning part, sometimes alongside verbal or logical reasoning. If your invitation comes from SHL, Korn Ferry / Talent Q or Aon (cut-e), also read that vendor's guide, which describes how its numerical test is presented.

What it is not

A hiring numerical reasoning test is not a psychological test or an exam on the content of a degree, does not measure intelligence, does not predict how you will perform in the job and does not certify anything: it is a stage of the process in which the company looks at how you solve certain kinds of problems with numbers at a given moment.

There are no psychological tests on this site. There are only original reasoning exercises to practice with, and your practice stays saved in your browser.

Practice this here

Practice here the five formats of a numerical test: quantitative aptitude, data interpretation, numerical sequences, probability reasoning and estimation reasoning. They are original exercises, not copies of real tests or of restricted tests.

Start with these tests

How to solve each type

Frequently asked questions

What is a numerical reasoning test?

In hiring, it is a timed test in which you solve problems with numbers: calculations with percentages and ratios, reading tables and charts, series, probability or estimates. What counts is how you reason with the data you are given, not how many formulas you remember.

Can you practice for a numerical reasoning test?

Yes. Practicing with similar formats helps you recognize the type of question, read tables and charts more easily and manage your time. It does not assure you a result, but it keeps the format from catching you off guard.

What is a Fermi problem?

It is an estimation question without exact data: you break the quantity into parts you can estimate and combine them to reach the right order of magnitude. It is named after the physicist Enrico Fermi, and what matters is the reasoning, not hitting the exact figure.

Is it the same as a psychotechnical test?

Not exactly. A psychotechnical test usually brings together several aptitude tests, and numerical reasoning can be one of them. A numerical reasoning test focuses on problems with numbers only.

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We are not affiliated with any assessment provider or their tests. This guide is independent, based on public sources and may change.