Using Estimation to Multiply with Decimals

Choose the reasonable product for 2.5 x 4 by using estimation.

• 0.1

• 1

• 10

• 100

Choose the reasonable product for 3.14 x 0.7 by using estimation.

• 2,198

• 219.8

• 21.98

• 2.198

Choose the reasonable product for 8 x 6.02 by using estimation.

• 4.816

• 48.16

• 481.6

• 4,816

Choose the reasonable product for 9.9 x 3.3 by using estimation.

• 0.3267

• 3.267

• 32.67

• 326.7

Choose the reasonable product for 5.48 x 9 by using estimation.

• 493.2

• 49.32

• 4.932

• 4,932

Choose the reasonable product for 1.5 x 2.8 by using estimation.

• 4.2

• 42

• 0.42

• 420

Choose the reasonable product for 0.2 x 8 by using estimation.

• 1.6

• 16

• 160

• 1,600

Zane is training for a race. When she trains, she runs on a path that is 1.45 miles long. Last week she ran on this path 6 times. How many miles did Zane run on the path last week?

• 87

• 0.87

• 870

• 8.7

TJ made a shelf to store her collection of dolls on. She used 5 pieces of wood that were each 3.25 feet long. How much wood did she use in all to make the shelf?

• 16.25 feet

• 0.1625 feet

• 162.5 feet

• 1.625 feet

Choose the reasonable product for 23.3 x 2.7 by using estimation.

• 6.291

• 62.91

• 629.1

• 6,291