2x2
Rounding
Area Model
10s, 100s, 1000s
Word Problem
100

54x23=

1,272

100

23x11=

200

100

38x22=

836

100

20x10=

200

100

Tyson is baking 15 apple pies for a bake sale. He needs 85 apple slices per pie. How many apple slices does he need in all? 

1,275

200

74x17=

1,258

200

35x37=

1,600

200
67x45=

3,015

200

40x30=

1,200

200
Ms. Carrao is a biology teacher. She teaches 18 classes each year. She has 39 students in each class. How many total students does he teach? 

702

300

26x12=

312

300

48x86=

4,500

300

31x14=

434

300

90x50=

4,500

300

The average person eats 57 hot dogs per year. Sawyer is 82 years old. About how many hot dogs would he have eaten during his lifetime? (Round to the nearest ten.)

4,800

400

55x36=

1,980

400

67x56=

4,200

400

41x11=

451

400

60x30=

1,800

400

Molly reads Halloween books with a friend. If she can read 99 words per minute, how many words can she read in 25 minutes? 

2,475

500

91x64=

5,824

500

73x84=

5,600

500

29x29=

841

500

60x50=

3,000

500

A witch was cooking 12 pots of Witch's Stew. She put 46 toads in each pot. How many toads did the witch use to make her stew? 

552

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