Multiplying and Dividing Decimals by Powers of 10

What is 8.04 × 10¹?

• 0.804

• 8.04

• 80.4

There are 100 tiles that were purchased to raise money for a new playground. The tiles will be laid along a walkway. Each tile is 4.75 inches wide. If the tiles are going to all be lined next to each other, how many inches long will they cover along the walkway?

• 0.475

• 47.5

• 475

• 4,750

What is 0.738 × 10⁴?

• 0.738

• 73.80

• 738.0

• 7,380

Choose all equations that are true.

• 9.21 x 10³ = 921

• 9.21 x 10³ = 9,210

• 0.921 x 100 = 921

• 0.921 x 10⁴ = 9,210

• 0.0921 x 10² = 9.21

Leroy’s house is 14.5 feet tall. The Willis Tower in Chicago is 100 times as tall as Leroy’s house. What is the height of the Willis Tower?

• 14.5 feet

• 14.50 feet

• 145 feet

• 1,450 feet

What is 82.68 ÷ 1,000?

• 0.08268

• 0.8268

• 8.268

Sandy plans on making 100 cookies that are the same size from 212.7 ounces of dough. How many ounces of dough should make up each cookie?

8.23 ÷ ____ = 0.00823

• 10¹

• 10²

• 10³

• 10⁴

Michelle says that 4,902 ÷ 1,000 is the same as 4,902 ÷ 10³. Is this true or false?

• True

• False

Choose the equations in which w = 100 makes the equation true.

• 0.54 ÷ w = 0.0054

• 4,086 ÷ w = 4.086

• 362.7 ÷ w = 3.627

• 5.3 ÷ w = 0.0053

• 21.9 ÷ w = 0.219