Using Powers Of Ten And Halves - Math Worksheet With Answer Key
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1
2Name:
Using Powers of Ten and Halves
Break each problem down using powers of ten and/or halves to solve.
A n s w e r s
1)
2)
60
35,000
× 50 = 3,000
50 × 700 =
60
1.
= 300
60
350
× 5
5 × 70 =
35,000
= 30
6
35
× 5
5 × 7 =
2.
4,800
3.
3)
4)
4,800
7,000
40 × 120 =
70 × 100 =
7,000
4.
48
70
4 × 12 =
7 × 10 =
24
35
4 × 6 =
7 × 5 =
80
5.
7,200
6.
5)
6)
80
7,200
90 ×
= 7,200
180 × 40 =
2,160
= 720
80
72
9 ×
18 × 4 =
7.
= 72
8
36
9 ×
9 × 4 =
30,000
8.
90
7)
8)
24 × 90 =
2,160
600 × 50 =
30,000
9.
108
300
12 × 9 =
60 × 5 =
81,000
10.
54
30
6 × 9 =
6 × 5 =
1,680
11.
9)
10)
90
× 80 = 7,200
90 × 900 =
81,000
60
12.
= 720
90
810
× 8
9 × 90 =
2,240
13.
= 72
9
81
× 8
9 × 9 =
1,920
14.
11)
12)
28 × 60 =
1,680
90 ×
60
= 5,400
= 540
84
60
14 × 6 =
9 ×
= 54
42
6
7 × 6 =
9 ×
13)
14)
70 × 32 =
2,240
32 × 60 =
1,920
112
96
7 × 16 =
16 × 6 =
56
48
7 × 8 =
8 × 6 =
1-10 93 86 79 71 64 57 50 43 36 29
Math
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