Re-Grouping
Multiples of 10s and 100s
Associative Property
Distributive Property
100

135 + 289

424

100

20x4

80

100

3x5x6

90

100

43x2

86

200

1,518 + 399

1,119

200

60x5

300

200

4x7x2

56

200

54x3

162

300

43 - 28

15

300

400x3

1,200

300

8x3x2x2

96

300

64x3

192

400

352 - 175

177

400

800x9

7,200

400

6x3x7x3

378

400

89x9

801

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