🎓Math Help

How it works

Maths gets easier the moment you internalise the order of operations. Always work from the inside out: first what is inside parentheses, then powers and roots, then multiplication and division, and only then addition and subtraction. That single rule explains why 2 + 3 × 4 equals 14 and not 20 — and why, when in doubt, you can always add extra parentheses.

Step by step

1. 1Find the calculator that matches your problem — percentages, fractions, powers or functions.
2. 2Enter your own numbers and look at the result.
3. 3Read the formula and the step-by-step explanation below it.
4. 4Check the common mistakes to see where things usually go wrong.

Worked examples

Common mistakes

• ✗Calculating left to right without respecting the order of operations.
• ✗Subtracting a percentage instead of dividing when working backwards.
• ✗Thinking a 50% rise followed by a 50% fall returns you to the start.
• ✗Confusing degrees and radians with sine and cosine.

When to use it

• ✓Doing secondary-school homework.
• ✓Preparing for a test or exam.
• ✓Helping your child as a parent without remembering the material.

Frequently asked questions