Estimating Multiplication

What is the estimated answer of 99 x 4?

• 4

• 40

• 400

• 4,000

What is the estimated answer of 58 x 61?

• 4,000

• 3,600

• 3,000

• 360

Estimate the product of 9,193 x 7:

• 9,000 x 7

• 9,000 x 10

• 10,000 x 7

• 10,000 x 10

Estimate the product of 272 x 5:

• 200 x 5

• 300 x 5

• 200 x 10

• 300 x 10

Estimate the product of 92 x 12:

• 90 x 10

• 92 x 12

• 100 x 10

• 100 x 20

Estimate the product of 37 x 63:

• 40 x 70

• 40 x 60

• 50 x 60

• 30 x 60

79 injections of vaccination were sent to 21 hospitals each. About how many total vaccination injections were sent out? Choose the best estimate.

• 79 x 21 = 1,659

• 70 x 20 = 1,400

• 80 x 20 = 1,600

Complete the sentence: when estimating products, we round the number to...

• the highest place value.

• the lowest place value.

In a school cafeteria, 1,350 lunch trays are used every day. Approximately how many lunch trays are used in 5 days? Choose the best estimate.

• 1,000 x 5 = 5,000

• 1,000 x 10 = 10,000

• 1,350 x 5 = 6,750

Estimate the product:

78 x 2

• 160

• 180

• 1,600

• 140