Question

直接寫得數(shù)．

0.6×1.1=	6.7+2.53=	0.36÷2=	4.5÷9=
50÷0.5=	0.4×0.26=	8×0.5=	21÷0.3=

Answer 1

分析：小數(shù)的加法，把小數(shù)點對齊，然后相對應的數(shù)字直接相加；小數(shù)乘法的計算法則：按整數(shù)乘法的計算法則進行計算，因數(shù)里面一共有幾位小數(shù)，就從積的末尾數(shù)出幾位點上小數(shù)點；小數(shù)的除法運算，把被除數(shù)和除數(shù)同時擴大10、100…倍，使除數(shù)變?yōu)檎麛?shù)，然后按照整數(shù)的除法進行計算；據(jù)此解答．

解答：解：

0.6×1.1=0.66	6.7+2.53=9.23	0.36÷2=0.18	4.5÷9=0.5
50÷0.5=100	0.4×0.26=0.104	8×0.5=4	21÷0.3=70

點評：題考查了學生小數(shù)小數(shù)加、乘和除法的掌握情況．