Estimating Using Compatible Numbers

Estimate the quotient using compatible numbers. 7,301 ÷ 76

• 80

• 9

• 90

• 8

Estimate the quotient using compatible numbers. 2,460 ÷ 81

• 30

• 3

• 80

• 300

Estimate the quotient using compatible numbers. 3,129 ÷ 42

• 800

• 40

• 8

• 80

Estimate the quotient using compatible numbers. 488 ÷ 68

• 9

• 7

• 70

• 700

Which pair of compatible numbers can be used to estimate the sum of 333+569?

• 330 + 570

• 400 + 600

• 340 + 560

• 330 + 560

Estimate: 4,804 - 3,479

Estimate: 6,308 + 95

Use compatible numbers to solve. 
287/42=?

• 7

• 70

• 8

• 80

Use compatible numbers. Estimate to find the sum. 
124 + 149=

• 300

• 275

• 273

• 175

Use the rounded numbers in question 4 to find about how many puzzles the owners have to sell.

• 1,590

• 1,580

• 1,590

• 1,600