Numerical Reasoning in AON Tests: What to Expect and How to Prepare

AON Assessment Solutions, formerly known as Cut-e, is one of the most widely used psychometric testing providers in corporate and graduate recruitment worldwide. If you are applying for a role at a major employer in energy, finance, consulting, engineering, or the public sector, there is a strong chance your numerical reasoning will be evaluated using an AON assessment. Companies like Shell, Siemens, Deutsche Bank, Unilever, and E.ON all rely on AON's platform to screen candidates before interviews.

What makes AON's numerical tests distinctive is their format. Unlike traditional aptitude tests that present a fixed set of questions in a straightforward sequence, AON frequently uses its proprietary "scales" methodology, which features short, adaptive subtests designed to measure your numerical ability with high precision in a compressed time window. This format catches many candidates off guard, especially those who have only practiced with SHL or Korn Ferry-style assessments.

This guide covers everything you need to know about the AON numerical reasoning test: the format, the question types you will encounter, how scoring works, the most effective preparation strategies, and the specific mistakes that cost candidates marks. Whether you are facing the test for the first time or retaking it after a previous attempt, the information here will help you walk in prepared and confident.

How the AON Numerical Test Format Works

The AON numerical reasoning test comes in several versions, but the most common format employers use is the "scales numerical" assessment. Understanding how this format works is essential because it behaves differently from the standard multiple-choice aptitude tests you may have encountered elsewhere.

In the scales numerical format, you are presented with a data set, typically a table, chart, or graph containing business-related figures, and then asked to evaluate a series of statements about that data. Rather than selecting from four or five answer options, you often need to determine whether a given statement is true, false, or cannot be determined based on the information provided. Some versions use a traditional multiple-choice format where you calculate a specific value and select the correct answer from a list.

The test typically contains between 15 and 25 questions, and the total time allocation ranges from 12 to 25 minutes depending on the version your employer has chosen. This translates to roughly 45 to 75 seconds per question, which is significantly less time than most candidates expect. The platform enforces this limit strictly: when time expires, the test submits automatically regardless of how many questions you have completed.

One of the defining features of the AON scales format is its adaptive difficulty mechanism. The system adjusts the complexity of subsequent questions based on your performance on earlier items. If you answer several questions correctly in succession, the next questions become harder. If you struggle, the difficulty eases slightly. This adaptive approach means that two candidates taking the same test may see questions of very different difficulty levels.

AON tests are typically delivered through the AON Assessment Platform, which has its own interface and navigation style. The platform looks and feels different from SHL's TalentCentral or Korn Ferry's testing environment, so candidates who only practice on those systems sometimes find the AON interface unfamiliar. Taking at least one practice test on the AON-style platform before your actual assessment eliminates this source of unnecessary stress.

Common Question Types and Data Formats

AON numerical reasoning tests draw from a consistent set of question types, all built around interpreting business data and performing calculations under time pressure. Knowing these categories in advance lets you practice the specific skills each one requires rather than approaching the test cold.

Data interpretation from tables. The most frequent question type presents a table of figures, often showing quarterly revenue, departmental budgets, production volumes, or employee statistics across multiple categories. You need to read the correct values, compare them, and draw conclusions. The challenge is not the mathematics itself but locating the right data points quickly in a table that may contain far more information than any single question requires.

Percentage change calculations. These questions ask you to calculate growth rates, decline percentages, or year-over-year changes from data presented in tables or bar charts. You might see a question like "By what percentage did Region B's output increase from Q2 to Q4?" The formula is straightforward, but accuracy matters because answer options are often close together, and rounding errors lead to wrong selections.

Ratios and proportions. Ratio questions ask you to compare values across categories or time periods. For example, you might need to determine the ratio of male to female employees in a department, or compare the proportion of total sales contributed by two product lines. These questions test whether you can extract relative relationships from absolute figures.

Revenue, cost, and profit calculations. Business-style questions present scenarios involving sales figures, cost breakdowns, margins, or profit calculations. You might need to calculate total revenue from unit prices and volumes, determine profit margins from revenue and cost data, or work out break-even points. These questions reflect the kind of numerical reasoning employers actually want to see in the workplace.

Currency conversions and unit transformations. Some AON tests include questions that require converting between currencies, measurement units, or time periods. These add an extra step to what would otherwise be a straightforward calculation, and they test your ability to keep track of multiple conversion factors without losing accuracy.

Chart and graph interpretation. Bar charts, line graphs, pie charts, and combination charts all appear in AON assessments. You need to read values accurately from axes, compare trends across data series, and sometimes combine information from multiple charts to answer a single question. Pie charts in particular require careful attention because estimating percentages from visual segments introduces error if you are not precise.

If you want to sharpen these specific skills, working through data interpretation practice questions is an excellent starting point. Understanding the underlying question mechanics before test day means you spend your limited time on calculation rather than figuring out what the question is asking.

AON vs. Other Major Test Providers

Candidates often prepare using generic numerical reasoning materials without realizing how much variation exists between test providers. The table below highlights the key differences between AON and the other major platforms you might encounter, so you can calibrate your preparation accordingly.

Feature	AON (Cut-e)	SHL	Korn Ferry	Cubiks/Talogy
Format name	Scales numerical	Verify interactive	Numerical reasoning battery	Logiks numerical
Adaptive difficulty	Yes, adjusts per item	Yes, in some versions	Limited adaptivity	No, fixed difficulty
Typical question count	15-25 items	18-24 items	20-30 items	20-24 items
Time limit	12-25 minutes	17-25 minutes	20-30 minutes	20-25 minutes
Time per question	~45-75 seconds	~60-75 seconds	~60-90 seconds	~60-75 seconds
Answer format	True/false/cannot say or multiple choice	Multiple choice (4-5 options)	Multiple choice (4-5 options)	Multiple choice (4-5 options)
Calculator allowed	Varies by version	Usually allowed	Usually allowed	Usually allowed
Data presentation	Tables, charts, mixed sets	Tables, charts, infographics	Tables, charts, word problems	Tables, charts
Platform interface	AON Assessment Platform	TalentCentral	Korn Ferry Talent Hub	Cubiks Online
Multiple questions per data set	Yes, common	Yes, standard	Sometimes	Sometimes

The most significant difference between AON and other providers is the combination of adaptive difficulty and tight time constraints. SHL tests also use adaptive difficulty in some versions, but the AON scales format is generally considered more time-pressured. Korn Ferry and Cubiks/Talogy tests use fixed difficulty levels, meaning every candidate sees questions of the same complexity regardless of performance.

Another important distinction is the answer format. While most providers use standard multiple-choice with four or five options, AON sometimes uses a true/false/cannot-say format that requires a different analytical approach. With multiple-choice questions, you can sometimes estimate or use elimination strategies. With true/false/cannot-say questions, you need to evaluate each statement precisely against the data without the safety net of elimination.

How AON Scoring Works

Understanding how your AON numerical test is scored helps you make better strategic decisions about time allocation and question prioritization during the assessment.

AON generates a percentile score that compares your performance to a norm group. This norm group varies depending on the role you are applying for. A graduate-level position might compare you against other recent graduates, while a senior management role would use a professional norm group. Your percentile tells the employer where you fall relative to other candidates. A score at the 70th percentile means you performed better than 70 percent of the comparison group.

The adaptive nature of the scales format introduces an additional layer to the scoring. Because question difficulty adjusts based on your answers, the scoring algorithm takes into account not just how many questions you answered correctly but also the difficulty level of those questions. Answering a harder question correctly contributes more to your score than answering an easier one. This means that if the test is getting harder as you progress, it is actually a positive sign: the system is increasing difficulty because you are performing well.

Most AON assessments also factor in a speed-accuracy balance. Rushing through questions and making errors does not help your score, even if you complete more items. Conversely, being extremely careful but only completing half the test will also limit your score. The optimal strategy is to work at a pace that lets you answer each question accurately while still completing as many items as possible within the time limit.

Some employers receive a detailed profile rather than a single score, which might include separate metrics for accuracy, speed, and consistency. This granular reporting means employers can distinguish between a candidate who is fast but error-prone and one who is slower but highly accurate. Understanding your own speed-accuracy tendency through practice lets you calibrate your approach before the real test.

Time Management Strategies for AON Tests

Time pressure is consistently the biggest challenge candidates report with AON numerical assessments. With as little as 45 seconds per question in some versions, you cannot afford to spend excessive time on any single item. Effective time management is a skill you can develop through deliberate practice.

Know your per-question budget. Before the test starts, divide the total time by the number of questions to establish your target pace. If you have 15 minutes for 20 questions, that gives you 45 seconds each. Check the clock after every three to four questions to confirm you are on track. If you fall behind, pick up the pace on the next question rather than trying to rush through several at once.

Read the data set strategically. When a new table or chart appears, do not try to absorb every number. Instead, scan the structure: what are the row and column headers? What units are used? What time period does the data cover? Then read the question and go back to the data to find only the specific values you need. This targeted approach saves significant time compared to studying the entire data set before reading the question.

Handle multiple questions per data set efficiently. AON frequently attaches several questions to a single data set. After answering the first question, the next questions will reference the same table or chart. Use this to your advantage: once you understand the data structure, subsequent questions should take less time because you already know where to find information.

Skip and return. If a question is taking longer than your per-question budget, make your best estimate, flag it mentally, and move on. In an adaptive test, spending two minutes on one difficult question at the expense of three easier questions later is a poor trade-off. Some AON platform versions allow you to go back to previous questions, but do not rely on this as some versions do not.

Practice under realistic time conditions. The single most effective way to improve your time management is to practice with timed tests that mirror the actual AON format. Untimed practice builds knowledge, but only timed practice builds the speed and decision-making skills you need under real test conditions. Start your preparation at assessment-training.com to access timed numerical reasoning exercises calibrated to the pace AON tests demand.

Common Mistakes and How to Avoid Them

Years of coaching candidates through AON numerical assessments have revealed a consistent set of mistakes that cost marks. Being aware of these pitfalls before test day lets you actively guard against them.

Misreading data units. Tables might show figures in thousands, millions, or percentages. If the column header says "Revenue (in thousands)" and you treat the figure 450 as 450 rather than 450,000, your calculation will be off by a factor of a thousand. Always check the units before you start calculating. This is one of the most common errors candidates make, and it is entirely preventable.

Confusing percentage of and percentage change. Candidates frequently mix up "what percentage of total sales does Product A represent?" with "by what percentage did Product A's sales change?" These are fundamentally different calculations. The first requires dividing Product A's value by the total. The second requires comparing two values from different time periods. Read the question wording carefully before selecting your formula.

Rounding too early. If a calculation involves multiple steps, rounding intermediate results introduces cumulative error. Keep your working figures precise until the final step, and only then round to match the answer format. AON answer options are often close together, and early rounding can shift you from the correct answer to an adjacent wrong one.

Spending too long on one question. As discussed in the time management section, getting stuck on a single question is one of the most costly mistakes in an adaptive test. Every minute you spend on a question you cannot solve is a minute taken away from questions you could answer correctly. Set a personal time limit per question and stick to it.

Not reading the "cannot be determined" option carefully. In true/false/cannot-say format questions, candidates sometimes assume an answer is true because it seems reasonable, even when the data provided does not actually support the statement. The "cannot be determined" option exists for a reason: some statements require information that is not present in the data set. If you find yourself making assumptions beyond what the data shows, the answer is likely "cannot be determined."

Neglecting practice with the AON interface. Familiarity with the platform reduces cognitive load during the test. If you have only ever practiced with paper-based questions or a different provider's platform, you will spend mental energy navigating the interface instead of focusing on the questions. Exploring how common numerical reasoning mistakes manifest in timed testing environments can help you identify which errors you are most prone to making.

How to Prepare Effectively for AON Numerical Tests

Effective preparation for AON numerical assessments follows a structured progression from foundational skills to test-specific practice. Candidates who follow a systematic plan consistently outperform those who rely on scattered, unstructured practice.

Phase 1: Build core numerical skills (days 1-3). Start by reviewing the fundamental operations that appear most frequently: percentages, ratios, fractions, basic arithmetic with large numbers, and data reading from tables and charts. If these skills are rusty, no amount of test-specific practice will compensate. Work through problems without a calculator first to rebuild mental arithmetic speed, then transition to calculator-permitted practice if your test version allows one.

Phase 2: Learn the AON format (days 4-5). Familiarize yourself with the scales format, the adaptive difficulty mechanism, and the types of data presentations AON uses. Understand the difference between true/false/cannot-say and traditional multiple-choice formats. Read through examples of each question type so you know what to expect before you encounter them under time pressure.

Phase 3: Timed practice tests (days 6-10). This is where preparation becomes most valuable. Take full-length practice tests under realistic time conditions. After each test, review every question you got wrong and every question that took longer than your per-question budget. Identify patterns in your errors: are you consistently misreading data? Struggling with percentage changes? Running out of time on chart-based questions? Target your remaining practice at your specific weak points.

Phase 4: Simulate test day conditions (days 11-12). On your final practice sessions, replicate the actual test environment as closely as possible. Sit at the same desk you will use on test day, with the same equipment, at the same time of day. Close all other applications and browser tabs. Set the timer and complete the practice test without interruption. This rehearsal reduces test-day anxiety and builds confidence.

Phase 5: Rest and prepare logistics (day before the test). Stop practicing the evening before the test. Review your notes on common mistakes and key formulas, but do not attempt new practice questions. Get a full night of sleep, prepare your equipment, and confirm your test time.

For candidates who want a comprehensive preparation resource, assessment-training.com offers timed numerical reasoning practice tests that cover the question types and difficulty levels you will encounter in AON assessments. Working through these materials in the structured progression above gives you the best chance of reaching your target score.

A well-structured preparation approach also aligns with what is outlined in our complete numerical reasoning preparation guide, which covers planning frameworks that apply across all major providers including AON.

What Employers Look For in Your AON Results

Understanding the employer's perspective helps you appreciate why preparation matters and what your score actually communicates about you as a candidate.

When an employer receives your AON numerical reasoning results, they typically see a percentile score, and in many cases, a more detailed profile that breaks down your performance into speed, accuracy, and consistency metrics. Employers at companies like Shell, Siemens, and Deutsche Bank set minimum percentile thresholds that candidates must meet to advance to the next stage. These thresholds vary by role and seniority level, but a common cutoff for graduate schemes is the 50th to 70th percentile range. Competitive programmes may require 80th percentile or higher.

Beyond the raw score, employers are increasingly interested in your speed-accuracy profile. A candidate who answers 18 out of 20 questions correctly in the allotted time demonstrates both competence and efficiency. A candidate who answers 10 out of 10 correctly but does not attempt the remaining questions may be seen as too cautious. A candidate who attempts all 20 but gets only 12 correct may be flagged as impulsive. The ideal profile shows a balance of speed and accuracy that reflects sound judgment under pressure.

Some employers use AON numerical results as an absolute filter: if you do not meet the threshold, your application stops regardless of your CV, cover letter, or other qualifications. Other employers use the score as one factor among many, weighting it alongside verbal reasoning, personality assessments, and interview performance. Your recruiter can usually tell you how much weight the numerical test carries in the overall decision.

Employers also value consistency between your initial online assessment and any follow-up verification test. If your AON score drops significantly when you take a supervised version, it raises concerns about the validity of your original result. This is another reason why genuine, thorough preparation matters more than looking for shortcuts: the skills you build through practice will hold up across both testing sessions.

Test Day Checklist and Environment Setup

Proper preparation on test day eliminates preventable problems and lets you focus entirely on the questions. Use this checklist to ensure everything is ready before you begin.

Equipment verification. Confirm that your computer meets the AON platform's technical requirements. Check your internet connection speed, ideally using a wired connection rather than WiFi. Make sure your browser is updated and that you have disabled pop-up blockers and unnecessary extensions. If the test is proctored, test your webcam and microphone. Ensure your laptop is plugged into power.

Environment preparation. Choose a quiet room where you will not be interrupted for the duration of the test plus a buffer of 15 minutes. Clear your desk of everything except your computer, a glass of water, and any permitted materials such as scratch paper and a calculator if allowed. Close the door and inform household members not to disturb you. If the test is proctored, make sure your background is neutral and that your face is well-lit for the webcam.

Mental preparation. Start the test at a time when you are most alert. For most people, this is mid-morning after a proper breakfast. Avoid caffeine overload, which can increase anxiety and reduce focus. Do a few warm-up calculations on scratch paper before clicking the start button, just as an athlete stretches before competing.

Documentation. Have your invitation email open in a separate tab (or printed) so you can reference the technical support contact information if anything goes wrong. Take note of the test provider's helpline number and your recruiter's contact details.

During the test. Read the on-screen instructions carefully, even if you have practiced with similar tests before. Instructions may specify whether a calculator is permitted, how many questions are in each section, and whether you can navigate back to previous questions. Answer any practice questions to confirm you understand the interface before the timed section begins.

For a broader look at how to structure your entire assessment preparation, including managing multiple tests in a single session, our aptitude test preparation plan covers logistics and scheduling strategies that complement your numerical reasoning practice.

Frequently Asked Questions

What is the difference between AON and Cut-e?

AON acquired Cut-e in 2017. The assessments are still widely referred to as Cut-e tests, but they now operate under the AON Assessment Solutions brand. The underlying platform, question formats, and scoring methodology remain the same regardless of which name your employer uses in the invitation email. If your recruiter mentions "Cut-e," "AON," or "AON Assessment Solutions," they are referring to the same testing system.

Can I use a calculator in AON numerical tests?

It depends on the specific test version your employer has selected. Some AON numerical assessments allow an on-screen calculator or permit you to use your own physical calculator. Others deliberately restrict calculator use to test mental arithmetic speed. Always read the instructions on the welcome screen carefully before starting, and check your invitation email for any equipment guidance. If calculator use is restricted, practice mental arithmetic techniques for percentages, ratios, and basic multiplication before your test.

How is the AON numerical test scored?

AON typically generates a percentile score that compares your performance to a relevant norm group, such as graduates or professionals in your industry. Some employers also receive a raw score and a speed-accuracy profile. The adaptive nature of certain AON tests means the difficulty of your questions influences the final score calculation, with correct answers to harder questions carrying more weight than correct answers to easier ones.

How long is the AON numerical reasoning test?

Most AON numerical reasoning assessments take between 12 and 25 minutes, depending on the version and the number of items. The scales numerical test uses short subtests that may each last only a few minutes, while traditional item-based formats typically allow 15 to 20 minutes for 15 to 25 questions. Your invitation email will usually specify the expected duration, and the platform displays the time limit before you begin the scored section.

Do AON tests use adaptive difficulty?

Yes. AON's scales format uses an adaptive approach where question difficulty adjusts based on your previous answers. If you answer correctly, subsequent questions become harder. If you answer incorrectly, difficulty decreases. This adaptive design produces a more precise measurement of your ability in a shorter testing time. It also means that encountering harder questions as you progress through the test is a positive indicator of strong performance.

Which employers use AON numerical tests?

AON assessments are used by a wide range of employers globally. Major companies that frequently use AON's platform include Shell, Siemens, Deutsche Bank, Unilever, E.ON, and PwC in certain regions. Many public-sector organizations across Europe also rely on AON for recruitment screening. The list changes as employers review their assessment partnerships, so always check your specific invitation email to confirm which provider is being used for your application.

Start Preparing for Your AON Numerical Test

The candidates who perform best on AON numerical reasoning tests are those who understand the format, practice under realistic conditions, and walk into the assessment with confidence built through genuine preparation. The AON scales format rewards both speed and accuracy, and the adaptive difficulty mechanism means that strong preparation directly translates into a higher-quality testing experience.

Do not leave your performance to chance. Start practising today at assessment-training.com to access timed numerical reasoning practice tests that mirror the question types, data formats, and time pressure you will face in your AON assessment. Build the skills and confidence you need to reach your target score and move forward in the hiring process.