Step-by-step explanation: To write a percent as a decimal, first remember that a percent is a ratio that compares a number to 100.
So we can think of 10% as the ratio 10 to 100 or 10 divided by 100.
Dividing by 100 moves the decimal point 2 places to the left so 10 divided by 100 would move the decimal point 2 places to the left which would give us .10 or 0.10. So 10% can be written as the decimal 0.10.
