Estimation With Multiplication

Estimate the product of 47 and 8.

• 300

• 500

• 600

• 400

Which is the most friendly way to estimate the product of 56 and 32?

• 60 x 30

• 60 x 40

• 55 x 30

Estimate the product of 56 and 32.

• 1800

• 2400

• 2000

• 1600

Which is the most friendly way to estimate the product of 74 and 63?

• 80 x 70

• 75 x 60

• 70 x 60

Estimate the product of 74 and 63.

• 5200

• 3800

• 4400

• 4200

Estimate the product of 45 and 9.

• 550

• 400

• 450

Estimate the product of 52 and 21.

• 1100

• 500

• 2000

• 1000

Match the expressions with a friendly estimation

• 45 x 10

• 49 x 51

• 40 x 50

• 45 x 9

• 50 x 2

• 41 x 48

• 50 x 50

• 47 x 2

Which shows the best estimate to use for estimating 37 × 63?

• 40 × 70 = 2,800

• 50 × 60 =  3,000

• 40 × 60 =  2,400

• 30 × 60 =  1,800

Each fourth grade class at Riverview Elementary has 27 students.  There 5 fourth grade classes.  What is the best estimate of the total amount of fourth grade students at Riverview Elementary? Show your work!

• 20

• 30

• 100

• 150