Question

10% of a number is 13. What is the number?

Answer 1

130

Explanation:

When finding 10% of a number just move the decimal over to the left once.

For example if your number is 150 you want to move the "decimal" over to the left once:

150 is the same as 150.0 so getting 10% gives you: 15.0

This means if you want to go the other way and find the number after already having 10% of the number then you want to move the decimal to the right. In this case:

13.0 would become 130.

13 is 10% of 130

Answer 2

130 would be the answer. 130x10% would give you 13