内容正文:
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五年级数学 第 1页(共 2页)
新课标作业 2021—2022 五年级上册单元练习(一)
数 学 参考答案
=
10.2 × 2.7 = 27.54 22.79 ÷ 2.15 = 10.6
9.8 × 25 = 245 10.5 ÷ 0.28 = 37.5
3.6 × 2.5 × 0.4 27 × 0.37 + 0.37 × 73 0.4 × 5 ÷ 0.4 × 5
= 3.6 × (2.5 × 0.4) = 0.37 × (27 + 73) = 2 ÷ 0.4 × 5
= 3.6 × 1 = 0.37 × 100 = 5 × 5
= 3.6 = 37 = 25
2 7.5 4
7 1 4
2 0 4
× 2.7
1 0.2
0
1 290
1 290
21 5
10.6
2.15 22.79)
2 4 5.0
2 0 0
2 2 5
× 9.8
2 5
验算:
9.8
× 2 5
4 9 0
1 9 6
2 4 5.0
验算:
3 0 0 0
3 0 0 0
7 5 0
37.5
0.2 8
10.5)
0
0
140
)10.500.28
37.5
8 4
2 10
1 96
140
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0 1 2 3 4 5 6 7 8 9 10 11 12
1
2
3
4
5
6
7
8
9
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五年级数学 第 2页(共 2页)
18 × 9.25 = 166.5
166.5
81 ÷ 4.5 = 18
2.4 ÷ 3 = 0.8
0.8 ÷ 4 = 0.2
0.2
(28 + 32) × 4.26 = 255.6
255.6
(1)68 × 0.55 = 37.4
37.4
(2)80 × 0.55 = 44
(98 − 80) × 0.6 = 10.8
44 + 10.8 = 54.8
54.8
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