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)
25,000
12,800
50 × 500 =
160 × 80 =
25,000
1.
250
128
5 × 50 =
16 × 8 =
12,800
25
64
5 × 5 =
8 × 8 =
2.
1,800
3.
3)
4)
1,800
30
50 × 36 =
× 90 = 2,700
30
4.
= 270
90
30
5 × 18 =
× 9
= 27
45
3
5 × 9 =
× 9
3,240
5.
56,000
6.
5)
6)
3,240
56,000
36 × 90 =
700 × 80 =
4,800
162
560
18 × 9 =
70 × 8 =
7.
81
56
9 × 9 =
7 × 8 =
18,000
8.
90
7)
8)
160 × 30 =
4,800
30 × 600 =
18,000
9.
48
180
16 × 3 =
3 × 60 =
36,000
10.
24
18
8 × 3 =
3 × 6 =
40
11.
9)
10)
70 ×
90
= 6,300
600 × 60 =
36,000
1,920
12.
= 630
90
360
7 ×
60 × 6 =
2,880
13.
= 63
9
36
7 ×
6 × 6 =
12,600
14.
11)
12)
80 ×
40
= 3,200
32 × 60 =
1,920
= 320
40
96
8 ×
16 × 6 =
= 32
4
48
8 ×
8 × 6 =
13)
14)
80 × 36 =
2,880
70 × 180 =
12,600
144
126
8 × 18 =
7 × 18 =
72
63
8 × 9 =
7 × 9 =
1-10 93 86 79 71 64 57 50 43 36 29
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