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)
18,000
60
600 × 30 =
60 ×
= 3,600
18,000
1.
= 360
180
60
60 × 3 =
6 ×
60
= 36
18
6
6 × 3 =
6 ×
2.
6,400
3.
3)
4)
6,400
840
40 × 160 =
30 × 28 =
840
4.
64
42
4 × 16 =
3 × 14 =
32
21
4 × 8 =
3 × 7 =
72,000
5.
70
6.
5)
6)
72,000
70
900 × 80 =
× 60 = 4,200
7,000
= 420
720
70
90 × 8 =
× 6
7.
= 42
72
7
9 × 8 =
× 6
1,800
8.
6,000
7)
8)
140 × 50 =
7,000
90 × 20 =
1,800
9.
70
90
14 × 5 =
9 × 10 =
2,560
10.
35
45
7 × 5 =
9 × 5 =
60
11.
9)
10)
50 × 120 =
6,000
80 × 32 =
2,560
1,800
12.
60
128
5 × 12 =
8 × 16 =
28,000
13.
30
64
5 × 6 =
8 × 8 =
800
14.
11)
12)
70 ×
60
= 4,200
50 × 36 =
1,800
= 420
60
90
7 ×
5 × 18 =
= 42
6
45
7 ×
5 × 9 =
13)
14)
700 × 40 =
28,000
40 × 20 =
800
280
40
70 × 4 =
4 × 10 =
28
20
7 × 4 =
4 × 5 =
1-10 93 86 79 71 64 57 50 43 36 29
Math
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11-14 21 14 7
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