题目内容
4.7+2.3=
4.5×2=
6.9-2.5=
7.2×0.8=
6×3.4=
0.62-0.32=
1.4×0.5=
0.75×100=
0.02×0.5=
3.6÷0.3=
6.3÷7=
5.6÷100=
0.75÷0.25=
0.125×8=
4.8÷0.3=
0.96÷2=
0.56÷28=
0.36÷0.4=
0.64÷0.8=
0.72÷3.6=
7
7
4.5×2=
9
9
6.9-2.5=
4.4
4.4
7.2×0.8=
5.76
5.76
6×3.4=
20.4
20.4
0.62-0.32=
0.3
0.3
1.4×0.5=
0.7
0.7
0.75×100=
75
75
0.02×0.5=
0.01
0.01
3.6÷0.3=
12
12
6.3÷7=
0.9
0.9
5.6÷100=
0.056
0.056
0.75÷0.25=
3
3
0.125×8=
1
1
4.8÷0.3=
16
16
0.96÷2=
0.48
0.48
0.56÷28=
0.02
0.02
0.36÷0.4=
0.9
0.9
0.64÷0.8=
0.8
0.8
0.72÷3.6=
0.2
0.2
.分析:根据小数加、减、乘、除法的计算法则,直接进行口算即可.
解答:解:4.7+2.3=7;
4.5×2=9;
6.9-2.5=4.4;
7.2×0.8=5.76;
6×3.4=20.4
0.62-0.32=0.3;
1.4×0.5=0.7;
0.75×100=75;
0.02×0.5=001;
3.6÷0.3=12;
6.3÷7=0.9;
5.6÷100=0.056;
0.75÷0.25=3;
0.125×8=1;
4.8÷0.3=16;
0.96÷2=0.48;
0.56÷28=0.02;
0.36÷0.4=0.9;
0.64÷0.8=0.8;
0.72÷3.6=0.2.
故答案为:7,9,4.4,5.76,20.4,0.3,0.7,75,0.01,12,0.9,0.056,3,1,16,0.48,0.02,0.9,0.8,0.2.
4.5×2=9;
6.9-2.5=4.4;
7.2×0.8=5.76;
6×3.4=20.4
0.62-0.32=0.3;
1.4×0.5=0.7;
0.75×100=75;
0.02×0.5=001;
3.6÷0.3=12;
6.3÷7=0.9;
5.6÷100=0.056;
0.75÷0.25=3;
0.125×8=1;
4.8÷0.3=16;
0.96÷2=0.48;
0.56÷28=0.02;
0.36÷0.4=0.9;
0.64÷0.8=0.8;
0.72÷3.6=0.2.
故答案为:7,9,4.4,5.76,20.4,0.3,0.7,75,0.01,12,0.9,0.056,3,1,16,0.48,0.02,0.9,0.8,0.2.
点评:此题考查的目的是理解掌握小数四则运算的计算法则,并且能够正确熟练地进行口算,提高口算能力.
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