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脱式计算(能简便的要简便计算)35÷[(15+13)÷29]14×37+47÷44.2×102-8.456÷(1-920)×153.64÷4+4.36×25%1110÷[56×(37-38)]36-23X=1838:x=6.
题目详情
脱式计算(能简便的要简便计算)
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| 4.2×102-8.4 | ||||||||||||||
| 3.64÷4+4.36×25% | 1110÷[56×(
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36-
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▼优质解答
答案和解析
(1)
÷[(
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(2)
×
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(3)4.2×102-8.4,
=4.2×102-4.2×2,
=4.2×(102-2),
=4.2×100,
=420;
(4)
÷(1-
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3 |
5 |
1 |
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9 |
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3 |
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8 |
15 |
2 |
9 |
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3 |
5 |
12 |
5 |
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1 |
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(2)
1 |
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3 |
7 |
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1 |
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1 |
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3 |
7 |
4 |
7 |
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1 |
4 |
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1 |
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(3)4.2×102-8.4,
=4.2×102-4.2×2,
=4.2×(102-2),
=4.2×100,
=420;
(4)
5 |
6 |
9 |
20 |
1 |
5 |
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5 |
6 |
11 |
20 |
1 |
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50 |
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作业帮用户
2016-11-20
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