Unit 6 Review

What is your favorite strategy to multiple decimals?

• Decimal Grid

• Area Model

• Partial Products

• Algorithm

Which of these are equivalent to 3.8 x 10³? Choose all that apply.

• 3.8 x 10 x 3

• 3.8 x 10 x 10 x 10

• 380

• 3,800

Knowing that 4.8 x 10² = 480, what is 4.8 x 10⁴?

• 480

• 4,800

• 48,000

• 480,000

Ben earns $2.75 for each crate of berries he picks. About how much would Ben earn if he picks 4 crates of berries?

• $10

• $11

• $12

• $13

According to his step-counter, Jerry walked 4.5 x 10⁴ steps during the past week. How many steps did Jerry walk last week?

• 45 steps

• 450 steps

• 4,500 steps

• 45,000 steps

Which sum is equivalent to 3.7 x 0.6?

• 180 + 42

• 18 + 4.2

• 1.8 + 4.2

• 1.8 + 0.42

Which equation is represented by the decimal grid?

• 0.03 x 0.09 = 0.27

• 3 x 0.9 = 2.7

• 0.3 x 0.9 = 2.7

• 0.3 x 0.9 = .27

A sandwich shop uses 0.12 pound of bacon on each sandwich. How much bacon will the shop need to make 7 sandwiches?

• 0.84 pounds

• 0.72 pounds

• 0.96 pounds

• 1.02 pounds

A dog’s rectangular play area is 3.9 meters wide and 16 meters long. What is the area of the play area?

• 62.4 square meters

• 54.4 square meters

• 64.4 square meters

• 60.4 square meters

Bruce knows that 5.8 × 17 = 98.6. Use place-value patterns to decide whether 5.8 × 1.7 = 98.6 is True or False.

• True

• False

• Cannot be determined