Estimate Quotients

You are participating in a remote control car race. It takes 215.78 seconds for your car to complete five laps. Which is the best estimate of the average time it takes to complete each lap?

• 22 seconds

• 44 seconds

• 30 seconds

• 55 seconds

Tags

CCSS.5.NBT.B.7

Communicate

Jake buys 12 books at the bookstore for $92.08. Each book costs the same amount. Jake uses 84 to estimate the cost of each book, and then also uses 96 to estimate. Why does he choose these numbers?

• 92.08 falls between 84 and 96, and both whole numbers are divisible by 92.08.

• 84 and 96 are even numbers.

• 92.08 falls between 84 and 96, and both whole numbers are divisible by 12.

• 92.08 does not fall between 84 and 96.

Multi-Step

Last week, Alaina ran 12 miles in 131.25 minutes. The next week, Alaina ran 12 miles in 119.5 minutes. About how much faster did she run each mile in the second week?

• 0 minutes

• 1 minute

• 3 minutes

• 5 minutes

A plant grew 23.8 inches over 8 weeks. Which is the best estimate of the average number of inches the plant grew each week?

• 0.2 inch

• 2 inches

• 0.3 inch

• 3 inches

Tags

CCSS.5.NBT.B.7

Use complatible numbers to estimate.

78.8 ÷ 8

Tags

CCSS.4.NBT.B.6

Use complatible numbers to estimate.

646.1 ÷ 34

Tags

TEKS.MATH.5.3A

Use complatible numbers to estimate.

35.6 ÷ 6

Tags

CCSS.4.NBT.B.6

Use complatible numbers to estimate.

$82.15 ÷ 23

Tags

CCSS.5.NBT.B.7

Use complatible numbers to estimate.

63.2 ÷ 18

Tags

CCSS.5.NBT.B.7

Use complatible numbers to estimate.

227.5 ÷ 21

Tags

CCSS.4.NBT.B.6