Rounding and Estimating

A restaurant sold 95 pizzas on Saturday and 78 pizzas on Sunday.

About how many pizzas did the restaurant sell on both Saturday and Sunday?

*Hint: Round to the nearest TENS first, then solve.*

• 170

• 180

• 160

Ms. Segura has 128 pencils for the class. Ms. Acosta has 316 pencils for the class. About how many total pencils do both teachers have for the class? *Round to the nearest TENS*.

• 450

• 440

• 460

Princess eats about 43 treats per week. Otis eats about 55 treats per week.

What is the best estimate of how many treats the dogs eat together per week?

• 90

• 110

• 100

The new gaming system PlayBox costs $449. The FunCube, costs $299.

Which number sentence shows the best way to estimate how much more a PlayBox costs than a FunCube? Round to the nearest TENS.

• $440 - $290 = $150

• $450 - $300 = $150

• $440 - $300 = $140

On Friday night, Debbie received 111 votes for her performance. Then on Saturday night, she received 168 votes. Which number sentence shows the best way to estimate her total votes for the two nights? *Round to the nearest HUNDREDS*.

• 100 + 200 = 300

• 100 + 100 = 200

• 200 + 200 = 400

Last week, a movie store sold 314 horror movies. The store also sold 168 comedy movies. Which expression shows the best way to estimate the difference between the number of horror movies and the number of comedy movies sold? *Round to the nearest TENS*.

• 310 - 170

• 300 - 160

• 310 - 180

The swimmer swam 34 laps in her pool in the morning and then 57 laps in her pool in the evening.

About how many more laps did she swim in the morning than she did in the evening?

• 20

• 30

• 10

Tags

CCSS.3.OA.D.8

A car dealership received 85 total vehicles last week. This week, the dealership received 102 total vehicles.

About how many total vehicles did the dealership received these two weeks combined?

• 200

• 170

• 190