Multiples of 10
Round to Estimate
Story Problems
Mystery
100

20 x 20

400

100

42 x 62

40 x 60 = 2,400

100

Nicole has 12 bags of M&M's. Each bag has 26 M&M's in each. About how many M&M's does Nicole have total?

What is 300 M&M's

100

Use the standard algorithm to solve 32x31

What is 992

200

30 x 50

1,500

200

31x56

30 x 60 = 1,800

200

May can run around the entire playground 11 times in 1 minute. How many times can he run around the playground in 12 minutes? Use the standard algorithm to solve

What is 132 times 

200

Use the area model to solve 35x36.

See Chalk Board

300

30 x 40

1,200

300

59 x 45

60 x 50 = 3,000

300

Trayvon ate 24 crackers at lunch today. He ate the same amount of crackers for the next 2 weeks (14 days). How many crackers did Trayvon eat?

What is 336 crackers

300

Use partial products to solve 75x46

See chalk board.

400

20 x 50

1,000

400

34 x 89

2,700

400

25 students each collected 25 box tops throughout the school year. How many box tops were collected by the end of the year?

625

400

Cody plays soccer everyday at recess. If he scores 18 goals everyday for the next 37 days, how many goals did he make total? Use the standard algorithm to solve 

What is 666

500

40 x 80

3,200

500

55 x 44?

60 x 40 = 2,400

500

Mr. Brooks bought 74 packs of cookies for the school. Each pack of cookies had 68 cookies. About how many cookies did Mr. Brooks buy?

What is 4,900

500

Solve 98x76 using the standard algorithm

What is 7,448