Name __________________________________ Date ______________________Mrs. Labuski & Mrs. Rooney Period _______ L8-8 Percents, Fractions, Decimals

Writing Decimals as Percents: 0.05

To write 0.5 as a percent, multiply the decimal by 100%. (Remember: To multiply a number by 100,

move the decimal point two places to the right.)

Now you try:

1. 0.03 _________ 2. 0.92_________ 3. 0.18_________

4. 0.49 _________ 5. 0.7 _________ 6. 0.09_________

7. 0.26 _________ 8. 0.11 _________ 9. 1.0_________

Writing Fractions as Percents:¾

You can use a proportion to write a fraction as percent.To write a fraction as a percent, first set up a proportion.

Cross multiply

1. Deserts cover about of all the land on Earth. About what percent of Earth’s land is made up of deserts?

2. The Sahara is the largest desert in the world. It covers about 3% of the total area of Africa. What decimal expresses this percent?

3. Cactus plants survive in deserts by storing water in their thick stems. In fact, water makes up ¾ of the saguaro cactus’s total weight. What percent of its weight is water?

4. Daytime temperatures in the Sahara can reach 130F! At night, however, the temperature can drop by 62%. What decimal expresses this percent?

Name __________________________________ Date ______________________Mrs. Labuski & Mrs. Rooney Period _______ L8-8 Percents, Fractions, Decimals

Writing Decimals as Percents: 0.05

To write 0.5 as a percent, multiply the decimal by 100%. (Remember: To multiply a number by 100,

move the decimal point two places to the right.)

Now you try:

Writing Fractions as Percents: ¾

You can use a proportion to write a fraction as percent.To write a fraction as a percent, first set up a proportion.

Cross multiply

60% 66.6% 0.4 0.4

1. Deserts cover about of all the land on Earth. About what percent of Earth’s land is made up of deserts?

1 x7 = 1007x = 100÷7 ÷7x = 14.285…About 14%

2. The Sahara is the largest desert in the world. It covers about 3% of the total area of Africa. What decimal expresses this percent?

3% = 0.03

3. Cactus plants survive in deserts by storing water in their thick stems. In fact, water makes up ¾ of the saguaro cactus’s total weight. What percent of its weight is water?

3 x4 = 1004x = 300÷4 ÷4x = 7575%

4. Daytime temperatures in the Sahara can reach 130F! At night, however, the temperature can drop by 62%. What decimal expresses this percent?

62% = 0.62