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Adding and Subtracting
Estimation and Mental Math
Multiplication
Area Model
Word Problems
100

121,589 + 3,261

124,850

100

Estimate the sum of 4,204 and 589.

4200+600 = 4800

100

64 x 8=

512

100

321 x 4

Use an area model to solve.

1284

100
Joan has 142 pieces of chocolate. Lizzie has 32 fewer pieces than Joan. How many pieces do they have altogether?

252 pieces of chocolate

200

430,285 + 1,002

431,287

200

Estimate the difference between 2,976 and 5,076

8,052

200

40 x 9

360

200

716 x 2=

Use an area model to solve

1,432

200
Emma bakes 42 chocolate chip cookies for Thanksgiving dessert. Mario bakes 10 fewer cookies than her. How many cookies do they have altogether?

74 cookies

300

57,327 - 41,678

53,162

300

Estimate the product of 5 and 689.

3,500

300

527 x 6

3,162 

300

8619 x 3=

Use an area model to solve

25,857

300

Jack went to a Broadway Play. There were 457 kids in the audience. There were three times more adults in the audience. How many adults were ther?

1371 adults

400

159,254 - 108,540

50,714

400

Estimate the product of 8 and 229.

1,600

400

1,468 x 7 =

10,276

400

4249 x 9=

Use an area model to solve.

38,241

400

Frank is buying a new video game. It costs him $72. His new gaming console costs him 6 times as much as the game. How much did he spend on the gaming console?

$432

500

What number must be added to 875 to ge to 1400?

525

500

Estimate the product of 879 and 6

5,400

500

4,567 x 4 =

18,268

500

6,245 x 8=

Use an area model to solve. 

49,960

500

At the Thanksgiving Day Parade, there are 9,000 people. There are 3,752 people wearing red shirts. There are 4,743 people wearing green shirts. The rest of the people are wearing purple. How many people are wearing purple?

505 people