Rounding
Estimation
Sums and Differences
Multiplication 1
Multiplication 2
100

Round 38,337 to the nearest hundred

What is 38,300?

100

Estimate the answer to 99 x 12. You must show your equation.

100 x 10 = 1000

100

What is the sum of 92.3 + 1.004?

What is 93.304?

100

What is 324 x 41?

What is 13,284?

100

What is 8.1 x 0.6?

What is 4.86?
200

Round 49.724 to the nearest hundredth.

What is 49.72?

200

Estimate the answer to 22 x 0.38. You must show your equation.

20 x 0.4 = 8

200

What is the difference of 51.4 - 3.901?

What is 47.499?

200

What is 908 x 12?

What is 10,896?

200

What is 90.4 x 3.2?

What is 289.28?

300

Round 9,372.094 to the nearest ten.

What is 9,370?

300

Marco buys 44 popsicles a day for 12 days. About how many popsicles did he buy? You must show your equation.

40 x 10 = 400 popsicles OR 40 x 12 = 480 popsicles

300

Find the sum of 7.3 + 19.01 + 0.004.

What is 26.314?

300

Mr. Brown has had 18 students a year for the last 12 years. How many students has he had in total?

What is 216 students?

300

Marla runs 3.1 miles 18 times a month for Running Club. How many miles does she run a month?

What is 55.8 miles?

400

Round 82.971 to the nearest tenth.

What is 83?

400

Jewel is painting a wall that is 28 feet by 13 feet. Estimate the square footage of the wall. You must show your equation.

30 x 10 = 300 square feet OR 30 x 12 = 360 square feet

400

May and June are throwing a party. May has 72.8 feet of streamers, and June has 113.05 feet of streamers. How many feet of streamers do they have together?

What is 185.85 feet of streamers?

400

There are 15 classrooms in a school, and each classroom can hold 22 students. How many students can attend the school?

What is 330 students?

400

Gina runs a lemonade stand for 8 weeks. Every week, she uses 8.32 bags of lemonade mix. How many bags did she use in total?

What is 66.56 bags of lemonade mix?

500
Round these three numbers to the nearest tenth: 317.17, 2.094, 0.1408.

What are 317.2, 2.1, and 0.1?

500

Lilo ran 8 races and averaged 25.7 minutes per race. Estimate the number of minutes she ran in total. You must show your equation.

10 x 30 = 300 minutes OR 10 x 25.7 = 257 minutes OR etc.

500

Clare is 52.03 inches tall, and her little brother Frank is 36.908 inches tall. How much taller is Clare than Frank?

What is 15.122 inches?

500

There are 52 tanks in the aquarium. Each tank contains 24 fish and 76 shellfish. How many animals are in the aquarium in total?

What is 5,200 animals?

500

Hope lives 4.5 miles from school. Johnna lives 1.2 times this distance. How far does Johnna live from school?

What is 5.4 miles?