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Mental Math with Place Value
What is the basic fact?
Multiply
Find the missing factor
100

Complete the pattern

6 x 5 = ______

6 x 50 = _____

6 x 500= _____

6 x 5,000= _____

30

300

3,000

30,000

100

What is the basic fact to help you solve

      70 x 90

7 x 9 = 63

100

4 X 20

80

100

10 x _____ = 200

20

200

Complete the pattern

3 x 7= ______

3 x 70 = _____

3 x 700 = ______

3 x 7,000= ______

21

210

2,100

21,000

200

What is the basic fact to help you solve

             6 X 20

6 x 2 = 12

200

7 X 30

210

200

70 x _____ = 700

10

300

Complete the pattern

3 X 3 = ______

3 x 30 = _____

3 x 300 = _____

3 x 3,000 = _____

9

90

900

9,000

300

What is the basic fact to help you solve

          4 X 30

4 x 3 = 12

300

50 X 30

1,500

300

____ x 50 = 4,000

80

400

Complete the pattern

2 X 4 = _____

2 x 40 = _____

2 x 400 = _____

2 x 4,000 = _____

8

80

800

8,000

400

What is the basic fact to help you solve

        20 X 70

2 x 7 = 14

400

40 X 40

1,600

400

____ X 40 = 200

5

500

Complete the pattern

6 X 8 = _____

6 x 80 = _____

6 x 800 = _____

6 x 8,000 = _____

48

480

4,800

48,000

500

What is the basic fact to help you solve

              90 x 40

9 x 4 = 36

500

60 X 70

4,200

500

9 X ______ = 810

90