“求5個2.57的和”用加法列式是2.57+2.57+2.57+2.57+2.572.57+2.57+2.57+2.57+2.57,用乘法列式為2.57×52.57×5.
【考點】小數(shù)乘法.
【答案】2.57+2.57+2.57+2.57+2.57;2.57×5
【解答】
【點評】
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發(fā)布:2024/5/27 14:0:0組卷:8引用:1難度:0.9
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