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
2,880
× 90 = 5,400
32 × 90 =
60
1.
= 540
60
144
× 9
16 × 9 =
2,880
= 54
6
72
× 9
8 × 9 =
2.
50
3.
3)
4)
50
8,400
× 70 = 3,500
60 × 140 =
8,400
4.
= 350
50
84
× 7
6 × 14 =
= 35
5
42
× 7
6 × 7 =
56,000
5.
7,000
6.
5)
6)
56,000
7,000
700 × 80 =
100 × 70 =
72,000
560
70
70 × 8 =
10 × 7 =
7.
56
35
7 × 8 =
5 × 7 =
30
8.
36,000
7)
8)
80 × 900 =
72,000
50 ×
30
= 1,500
9.
= 150
720
30
8 × 90 =
5 ×
2,160
10.
= 15
72
3
8 × 9 =
5 ×
32,000
11.
9)
10)
40 × 900 =
36,000
24 × 90 =
2,160
9,600
12.
360
108
4 × 90 =
12 × 9 =
1,920
13.
36
54
4 × 9 =
6 × 9 =
30
14.
11)
12)
40 × 800 =
32,000
160 × 60 =
9,600
320
96
4 × 80 =
16 × 6 =
32
48
4 × 8 =
8 × 6 =
13)
14)
24 × 80 =
1,920
30
× 70 = 2,100
= 210
96
30
12 × 8 =
× 7
= 21
48
3
6 × 8 =
× 7
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3
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