4-3 Estimation and Rounding Quiz

Complete the estimate for the product. Enter your answers in the boxes.

92 × 36 rounds to   ​ (a)      × 40 =   ​ (b)  

• 90
• 3,600

It took Anne 18 hours to drive from her home to Miami. She drove about 62 miles each hour. Which shows the best way to estimate the distance from Anne's home to Miami?

• 70 × 20

• 60 × 10

• 60 × 20

• 0 × 10

How is using compatible numbers to estimate similar to using rounding? How is it different? Select all the true statements.

• Both ways give an approximate solution.

• One way gives an approximate solution, and the other way gives an exact solution.

• One way may give an estimate that is closer to the actual solution than the other method.

Which gives the best estimate for the product 12   ×   53?

• 60 × 12

• 10 × 60

• 53 × 10

• 10 × 50

Select all of the expressions that could be used to estimate 61   ×   24.

• 60 × 30

• 60 × 20

• 61 × 20

• 70 × 20

• 24 × 61