Multiples of 10
Area Models
Rounding/Compatible Numbers
Partial Products
Choose A Strategy
100

40x10=

400

100

10x23=

230

100

29x31=

900

100

14x32=

448

100

12x19=

228

200

80x50=

4,000

200

16x20=

320

200

41x42=

1,600

200

64x12=

768

200

38x12=

456

300

80x70=

5,600

300

24x36=

864

300

42x49=

2,000

300

56x17=

952

300

45x34=

1,530

400

30x900=

27,000

400

57x82=

4,674

400

73x18=

1,400

400

72x15=

1,080

400

68x54=

3,672

500

60x600=

36,000

500

71x91=

6,461

500

24x48=

1,000

500

86x52=

4,472

500

72x32=

2,304

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