Estimate Division with Compatible Numbers

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

Use compatible numbers to estimate.

1,847 ÷ 24

• 2500 ÷ 25 = 100

• 1,850 ÷ 20 = 92.5

• 1,800 ÷ 20 = 90

When we estimate quotients we ______.

• use compatible numbers.

• round.

Which of the following is the best way to estimate 487/67 with compatible numbers?

• 480 divided by 70

• 485 divided by 60

• 490 divided by 60

• 490 divided by 70

Which of the following is the best way to estimate 487 ÷ 67 with compatible numbers? (5-2)

• 480 divided by 70

• 485 divided by 60

• 490 divided by 60

• 490 divided by 70

Estimate the quotient using compatible numbers. 488 ÷ 68

• 9

• 7

• 70

• 700

Choose the estimated expression that is compatible with the equation below:

236​ ÷ 63 ≈ ​ (a)  

• 240 ÷ 60 ≈

• 240 ÷ 70 ≈

• 230 ÷ 60 ≈

Estimate using compatible numbers: 2,512 ÷ 65

• about 50

• about 40

• about 30

• about 25

552 ÷ 9

• about 30

• about 40

• about 50

• about 60