EXAMPLE: Change 10% to a decimal.
10.
0.1
10%
b. If the percentage is written as a fraction or mixed number, change to a
decimal, and then move the decimal point two places to the left.
EXAMPLE: Change 1% to a decimal.
5
1% → 1 → 1 :
5 = 0.2 → 0.002
5
5
EXAMPLE: Change 3 1% to a decimal.
2
3 1% → 3 1 = 7 : 2 = 3.5 → 0.035
2
2
A decimal can be changed to a percentage by:
a. Multiplying by 100 (this can be done by moving the decimal point two places
to the right).
b. Adding a percent sign (%).
EXAMPLE: Change 0.5 to a percentage.
0.5 → 50. → 50%
1-44. PRACTICE 1-8
a. Change the following percentages to fractions:
(1)
6%
1%
(2)
8
31%
(3)
2
4%
(4)
5
MD0904
1-36