Chapter 2.1 - 2.3

Let's Get Multiplying!

100

2 X 10

20

200

5 X 20

100

300

3 X 300

900

400

2 X 40

80

500

6 X 8000

48000

Round them up!

100

Estimate the answer:

703 x 60 = 

42,000

200

Estimate:

58 x 219=

12,000

300

Estimate:

652 x 73 =

49,000

400

Estimate:

39 x 415

16,000

500

Estimate:

74 X 85

6300

Miss you

100

___X 10=40

4

200

7 X ___ = 7,000

1000

300

54 X ___ = 540

10

400

4 X ___ = 160

40

500

7 X ___ = 4,900

700

We have the power!

100

5 X 10²

500

200

8 X 10³

8000

300

6 X 10²

600

400

5 X 10³

5000

500

9 X 10³

9000

Seeing doubles

100

97 x 53

5,141

200

63 x 28

1,764

300

65 x 44

2,860

400

91 x 85

7,735

500

25 x 40

1,000