Step by step
The question
Question: work out 30% of 90.
30% of 90 = ?
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%
90 divided by 10 is 9.
10% of 90 = 90 ÷ 10 = 9
2 Build 30%
30% is 3 times 10%.
3 times 9 is 27.
30% of 90 = 3 × 9 = 27
So 30% of 90 is 27.
30% of 90 = 27
So 30% of 90 is 27.
Let's look back.
First: find 10%.
Last: build 30%.
Answer
30% of 90 = 27