Estimating Quotients with Two Digit Divisors

• 30

• 20

• 1

• 10

Use compatible numbers to estimate.

7,233 ÷ 84

• 8500 ÷ 85 = 100

• 7,200 ÷ 90 = 80

• 7,200 ÷ 80 = 90

Use compatible numbers to estimate.

568 ÷ 34

• 570 ÷ 30 = 19

• 600 ÷ 30 = 20

• 500 ÷ 50 = 100

Use compatible numbers to estimate.

4,479 ÷ 89

• 4,500 ÷ 90 = 50

• 4,400 ÷ 90 = 50

• 4,000 ÷ 100 = 40

Estimate the quotient: 1,769 ÷ 23

• 20

• 18

• 90

• 9

Which expression will give the best whole-number estimate for

125 ÷ 64

• 100 ÷ 50

• 150 ÷ 50

• 120 ÷ 60

• 130 ÷ 90

• 6

• 8

• 10

• 12

Estimate:

729 ÷ 81

Use compatible numbers to estimate.

1,847 ÷ 24

• 2500 ÷ 25 = 100

• 1,850 ÷ 20 = 92.5

• 1,800 ÷ 20 = 90

Which number sentence with compatible numbers is the most reasonable estimate of the quotient for 478 ÷ 47?

• 500 ÷ 25 = 20

• 500 ÷ 50 = 10

• 400 ÷ 50 = 8

• 600 ÷ 40 = 15