Step by step
The question
Question: work out 15% of 40.
15% of 40 = ?
Percent means out of 100.
So 10% is 10 out of 100: one tenth.
To find 10%, we divide by 10.
10% = ÷ 10
1 Find 10%
40 divided by 10 is 4.
10% of 40 = 40 ÷ 10 = 4
2 Build 15%
We build 15% from easy pieces: 15% is 10% and 5%.
15% = 10% + 5%
5% is half of 10%.
Half of 4 is 2.
5% of 40 = 4 ÷ 2 = 2
3 Add the pieces
Now we add the pieces.
4 plus 2 is 6.
15% of 40 = 4 + 2
= 6
So 15% of 40 is 6.
Let's look back.
First: find 10%.
Then: build 15%.
Last: add the pieces.
Answer
= 6