Unit 4 Review

70 x 80 =

• 560

• 420

• 5,600

• 4,200

Which is the best estimate for 87.2 x 39

• 80 x 30 2,400

• 90 x 30 = 2,700

• 80 x 40 = 3,200

• 90 x 40 = 3,600

17.5 x 10^{3 =}

• 1.75

• 175

• 17,500

• 0.175

How many decimals places should your product have?

4.3 x 5.6

• 1 decimal place

• 2 decimal places

• 3 decimal places

• no decimal places, its a whole number

Which is the best estimate for the problem 45 x 92.

• 40 x 90 = 3,600

• 50 x 100 = 5,000

• 50 x 90 = 4,500

• 40 x 100 = 4,000

7.129 × 10² =

• 712.9

• 71.29

• 0.7129

• 0.07129

23 x 10⁴=

• 23,000

• 230,000

• 2,300

• 230

Which is the best estimate for 5.321 x 9.56 =

• 5 x 9 = 45

• 5 x 10 = 50

• 6 x 9 = 54

• 6 x 10 = 60

2.7 x 10

• 270
• 0.27
• 27
• 0.027

Tags

CCSS.5.NBT.A.2

How many decimals places should your product have?

0.43 x 95.6 =

• 1 decimal place

• 2 decimal places

• 3 decimal places

• no decimal places, its a whole number