Estimate Quotients with Compatible Numbers

Estimate 30.8 divided by 4.96 by rounding with compatible numbers.

• 32 divided by 4 = 8

• 30 divided by 6 = 5

• 30 divided by 5 = 6

There are 2 ways to estimate: You can _______ a number to find an estimate or you can use ________________________ to find and estimate.

• multiply compatible numbers

• round multiplication

• round compatible numbers

• change rounding

Pick the expression with the better compatible numbers to estimate 357÷5

Pick the expression with the better compatible numbers to estimate 

815÷9

Pick the expression with the better compatible numbers to estimate 

1,325 ÷ 3

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

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.