Percent means out of a hundred
The whole thing is always 100%, whatever it is — a cake, a class, your battery. 30% means 30 pieces out of 100 equal pieces.
Class 5 to 8 · 31 games
Percentages, explained with pictures
Parts of a whole, always counted out of a hundred.
In everyday life: A 20% discount in a sale, 85% marks in a test, a phone battery at 40%.
A few percentages are worth just knowing
50% is half. 25% is a quarter, and 75% is three quarters. Most percentage questions can be built out of these.
10% is the one you do in your head
10% is one tenth, which you get by dividing by 10. Once you have 10%, you have 20% by doubling it and 5% by halving it.
Percentages let you compare unequal groups
12 correct out of 20, or 24 correct out of 40? Both are 60%. Turning everything into out of 100 is what makes them comparable.
A worked example
What is 25% of 80?
20
25% is a quarter. A quarter of 80 is 80 divided by 4, which is 20.
Words to know
- percent
- Out of a hundred. The sign is %.
- of
- In percentage questions, of means multiply.
In the games
You will read percentages off shaded grids, estimate what share is coloured, and find a percentage of an amount.
Skills
- Percent as parts of a hundred · Class 6
- Estimate a percentage · Class 6
- Percentage of a quantity · Class 7
- Compound interest · Class 8
By class
Class 5 percentages (2) · Class 6 percentages (11) · Class 7 percentages (8) · Class 8 percentages (10)
Practise percentages in Tivumo
No download, no account for your child. Classes 3 to 12, more than 1,000 games.