| 用递等式计算. 19.9-(7.81×0.42+0.58×7.81) |
1.3×2.6×25÷(0.65×200) | 5÷
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(9
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1688÷(24.3×2-6
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1.21×42-(4.46+
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| 45 |
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| 195 |
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| 168 |
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| 63 |
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| 50 |
科目:小学数学 来源: 题型:
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科目:小学数学 来源: 题型:
| 用递等式计算,能简算的要简算 (1)(
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(2)(2-
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(3)5
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(4)[(2
|
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科目:小学数学 来源: 题型:解答题
| 用递等式计算. 19.9-(7.81×0.42+0.58×7.81) | 1.3×2.6×25÷(0.65×200) | 5÷ |
| (9 | 1688÷(24.3×2-6 | 1.21×42-(4.46+ |
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