Show:
Multiplying by Single Digit Numbers
Estimation
Multiplying by Double Digit Numbers
Distributive Property
Properties of Addition
100

39 X 5

195

100

432 X 27

12,000

100

45 X 71

3,195

100

10 (4 + 3)

70

100

3 + 8 = 8 +3

commutative property

200

72 X 8

576


200

576 X 81

48,000

200

63 X 58

3,654

200

8 (19 + 3)

176

200

5 + (8 +6) = (5 + 8) + 6

associative property

300

99 X 6

594

300

674 X 113

70,000

300

732 X 12

8,784

300

9 (13 + 11) 

216

300

832 + 4,501 = 4,501 + 832

commutative property

400

102 X 9

918

400

4,308 X 591

2,400,000

400

819 X 23

18,837

400

34 (5 + 8)

442

400

432 +0 = 432

identity property

500

10,732 X 4

42,928

500

5,941 X 318

1,800,000

500

1,084 X 93

100,812

500

47 (14 + 9)

1,081

500

(4 + 320) + 15 = 4 + (320 + 15)

associative property