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脱式计算.50.4÷3.2×2.08204÷(3.4×0.5)(43.26+2.34)÷7.5(20-0.8×9)×5.7.
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脱式计算.
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答案和解析
(1)50.4÷3.2×2.08, =15.75×2.08, =32.76; (2)204÷(3.4×0.5), =204÷1.7, =120; (3)(43.26+2.34)÷7.5, =45.6÷75, =6.08; (4)(20-0.8×9)×5.7, =(20-7.2)×5.7, =12.8×5.7, =72.96. |
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