Step by step
The question
Question: write 12/25 as a percent.
1225
1 Make the bottom 100
Percent means out of 100.
So we want a bottom of 100.
25 times 4 is 100.
25 × 4 = 100
We multiply the top and the bottom by 4.
4/4 is 1, so the value stays the same.
= 12 × 425 × 4
12 times 4 is 48.
So we get 48/100.
= 48100
Careful!
As a decimal, 12/25 is 0.48.
But 0.48% means 0.48 out of 100: far too small.
Careful: not 1225 = 0.48% ✗
2 Write the percent
48 out of 100 is 48%.
= 48%
3 Check
Let's check: go back.
48% is 48/100.
Divide the top and the bottom by 4.
We get 12/25.
So the answer is right!
Check: 48% = 48100 = 48 ÷ 4100 ÷ 4 = 1225
Let's look back.
First: make the bottom 100.
Then: write the percent.
Last: check.
Answer
= 48%