Percentage practice

Practice session

What you practise

Each question asks for one number. After you answer, you see your answer next to the correct one, followed by the steps. When your answer matches a common slip, such as forgetting to divide by 100, the feedback names it. Your progress stays on this device.

• Percent of a number: for example 15% of 80
• Part of a whole: what percentage is 12 of 80?
• Percentage change: from 50 to 65
• Finding the whole: 12 is 15% of what number?

Levels and difficulty

Choose vmbo, havo or vwo. Difficulty (1–4) adapts while you practice: five right in a row moves you up a step; two or fewer out of five moves you down and opens the explanation. At havo and vwo, questions start with the exam verb bereken (calculate), defined in the Dutch exam-verb list as "het gevraagde uitrekenen", working out what is asked (syllabus wiskunde B havo 2027 (Examenblad)). Test mode adds a timer, removes hints and ends with one summary.

Example

Calculate 15% of 80.

1. Formula: amount = number × percentage ÷ 100
2. Fill in: 80 × 15 ÷ 100
3. Multiply: 80 × 15 = 1200
4. Divide: 1200 ÷ 100 = 12

Answer: 12. The percentage calculator gives the same steps.

What you need to know

Where percentages sit in the 2027 central exam syllabus (only levels we have a source for). A checklist of what you practice here, not a full exam list.

vwo · wiskunde A · domain B (B1 Algebra)

Algebra en tellen (algebra and counting) · source syllabus wiskunde A vwo 2027 (Examenblad)

• Percent of a number
• Part of a whole as a percentage
• Percentage change (increase or decrease)
• Finding the whole when the percentage is known

We have not checked the vmbo and havo syllabi for percentages yet; you can still practice at every level.

Formula sheet

Print-friendly: use Print in your browser.

• Percent of $$\mathrm{amount}=\mathrm{number}\times \mathrm{percentage}÷100$$
• Part of a whole $$\mathrm{percentage}=\mathrm{part}÷\mathrm{whole}\times 100$$
• Example (15% of 80 → 12) $$80\times 15÷100=12$$

BTW

The Dutch word for VAT (value added tax). Price questions in Dutch schoolbooks often use it.

Practice with real exam questions on Examenblad.nl (in Dutch). We do not host past exams.

Frequently asked questions

Where is my score saved?

Your score stays on this device only. There is no account.

What is test mode?

A fixed set of questions with a timer. You get no hints or explanations in between, and one summary per skill at the end.

How does this relate to the calculator?

The answers and steps come from the same code as the percentage calculator.