口算下面各题. 0.7+2.8= 7.3﹣0.6= 0.84÷0.2= 0...
2023-01-06
【题目】口算下面各题.
0.7+2.8= 7.3﹣0.6= 0.84÷0.2= 0.12×0=
0.4×0.05= 0.5÷100= 5.2+3.8= 1.45+5.5=
【答案】3.5,6.7,4.2,0,0.02,0.005,9,6.95
【解析】
试题分析:本题根据小数的加法、减法、乘法、除法的运算法则计算即可.
解:
0.7+2.8=3.5, 7.3﹣0.6=6.7, 0.84÷0.2=4.2, 0.12×0=0,
0.4×0.05=0.02, 0.5÷100=0.005, 5.2+3.8=9, 1.45+5.5=6.95.
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