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)
12,600
60
140 × 90 =
× 50 = 3,000
12,600
1.
= 300
126
60
14 × 9 =
× 5
60
= 30
63
6
7 × 9 =
× 5
2.
70
3.
3)
4)
70
15,000
90 ×
= 6,300
500 × 30 =
15,000
4.
= 630
70
150
9 ×
50 × 3 =
= 63
7
15
9 ×
5 × 3 =
960
5.
1,680
6.
5)
6)
960
1,680
40 × 24 =
70 × 24 =
10,800
48
84
4 × 12 =
7 × 12 =
7.
24
42
4 × 6 =
7 × 6 =
60
8.
1,440
7)
8)
90 × 120 =
10,800
60
× 90 = 5,400
9.
= 540
108
60
9 × 12 =
× 9
32,000
10.
= 54
54
6
9 × 6 =
× 9
7,000
11.
9)
10)
36 × 40 =
1,440
800 × 40 =
32,000
1,800
12.
72
320
18 × 4 =
80 × 4 =
840
13.
36
32
9 × 4 =
8 × 4 =
28,000
14.
11)
12)
70 × 100 =
7,000
36 × 50 =
1,800
70
90
7 × 10 =
18 × 5 =
35
45
7 × 5 =
9 × 5 =
13)
14)
30 × 28 =
840
40 × 700 =
28,000
42
280
3 × 14 =
4 × 70 =
21
28
3 × 7 =
4 × 7 =
1-10 93 86 79 71 64 57 50 43 36 29
Math
6
11-14 21 14 7
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