vmbo havo vwo
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Quick answer
Type a short question that contains the numbers. If it fits one of our calculators, this page fills in that calculator and shows the same steps you would get on its own page. The steps come from the calculator itself, so nothing is made up along the way.
Your question
Try one of these: what is 15% of 80, quadratic formula a=1 b=-5 c=6, 12 + 8 × 2.
This question does not match a calculator we have checked, so we will not guess an answer. Pick a topic below, or write the numbers more briefly (for example «15% of 80»).
What you can type
The box recognises a fixed set of question shapes. Each example below is also a case in the automatic router test of this site, which checks that it opens the page shown with the right numbers.
| Kind of question | Example | Opens |
|---|---|---|
| Percentage of an amount | what is 15% of 80 | Percentage calculator |
| Percentage change | percentage change from 50 to 65 | Percentage calculator |
| Linear equation | solve 3x + 5 = 20 | Linear equation solver |
| Quadratic equation | quadratic formula a=1 b=-5 c=6 | Quadratic formula |
| Right triangle | hypotenuse 13 leg 5 | Pythagorean theorem |
| Fractions | fraction 1/2 + 1/3 | Fraction calculator |
| Mean of a list | mean of 2, 5, 5, 8, 11 | Mean calculator |
| GCD or LCM | gcd of 12 and 18 | GCD and LCM |
| Division with remainder | 17 divided by 5 with remainder | Division with remainder |
| Derivative | derivative of x^2 + 3x | Derivative calculator |
| Exponential growth | 1000 grows 5% per year, after 10 years | Exponential growth |
| A plain sum | 12 + 8 × 2 | Online calculator |
| Practice a topic | practice fractions | Fractions practice |
| See a graph move | draw y = 2x + 3 | Linear function simulation |
Name one topic per question. A question such as pythagoras and mean 3 4 mixes two calculators, so the page asks you to choose instead of picking one for you.
What happens to your question
The matching runs in your own browser, in the code of this page. Your question is not sent to a server to be answered, and no AI is involved.
After you press the button, the question does appear in the address bar (?q=…) so you can bookmark or share the result. If you open such a link later, the question is part of the web address your browser requests from our server, like any other link.
Pick a calculator yourself
Already know the topic? Go straight to the page. If your question does not fit, nothing is filled in automatically.
Percentage calculator
15% of 80, part of a whole, or percentage change.
Quadratic formula
Solve ax² + bx + c = 0 with the discriminant.
Linear equation solver
ax + b = c, one step at a time.
Pythagorean theorem
The hypotenuse or a missing leg.
Fraction calculator
Add, subtract, multiply, divide and simplify.
Online calculator
Sums with the order of operations.
FAQ
Is this an AI chatbot?
No. There is no AI behind it and nothing is guessed. Your question is matched to a calculator we have already checked, and the steps come from that calculator.
Which questions work?
Short questions with numbers in them, such as 15% of 80, quadratic formula a=1 b=-5 c=6, or a sum like 12 + 8 × 2. Proofs, long word problems and photos of homework do not work.
What happens if nothing matches?
Nothing is filled in and no answer is guessed. You get up to three pages that may help, and you can pick a calculator from the list on this page.
Can I type my question in Dutch?
Yes. Dutch questions such as wat is 15% van 80 work too. The links still open the English pages.