题目内容

0.36÷9= 3.97-2.45= 16×25= 5.2+3.8=
8.282÷8.2= 10-0.87= 4.3+1.8= 18.9-9.8=
0.8÷0.1= 0.3+0.36= 1.14×0.2= 7.8÷3=
0.8×15= 0.125×8= 4-1.08= 9×1.8=
1.2×8= 7.82+1.18= 30.5÷2= 1.8×0.2=
0.75÷30= 0.25×3= 4.8+1.2= 0.5×48=
0.7×7= 1.1×9= 25×0.8= 3.2×5=
3×1.2= 2.04×4= 0.72+2.8= 0×3.97=
0.13×80= 18×30= 50×4.1= 0.125×2=
6×0.75= 1.01-0.89= 9.767×0= 0.02×0.3=
3.9÷5= 1÷0.125= 70÷5= 0÷9.126=
0.72= 16.5÷0.15= 7÷1.4= 1.21÷11=
0.84÷0.42= 0.7×0.9= 0.3×400= 5.1÷0.3=
8.3+1.7= 4.9÷0.7= 0.3+0.3+0.3= 0.81÷0.9×5=
(0.9+8.1)×5= 0.32= 9.3÷(4.2-1.1)= 1.7×0.6÷1.7=
分析:0.72表示0.7×0.7;0.3+0.3+0.3可以根据乘法的意义求解;0.81÷0.9×5先算除法,再算乘法;(0.9+8.1)×5,先算括号里面的加法,再算乘法;0.32=表示0.3×0.3;9.3÷(4.2-1.1)先算括号里面的减法,再算除法;1.7×0.6÷1.7可以运用乘法交换律简算;其它题目按照运算法则直接求解.
解答:
解:0.36÷9=0.04, 3.97-2.45=1.52, 16×25=400, 5.2+3.8=9,
8.282÷8.2=1.01, 10-0.87=9.13, 4.3+1.8=6.1, 18.9-9.8=9.1,
0.8÷0.1=8, 0.3+0.36=0.66, 1.14×0.2=0.228, 7.8÷3=2.6,
0.8×15=12, 0.125×8=1, 4-1.08=2.92, 9×1.8=16.2,
1.2×8=9.6, 7.82+1.18=9, 30.5÷2=15.25, 1.8×0.2=0.36,
0.75÷30=0.025, 0.25×3=0.75, 4.8+1.2=6, 0.5×48=24,
0.7×7=4.9, 1.1×9=9.9 25×0.8=20, 3.2×5=16,
3×1.2=3.6, 2.04×4=8.16, 0.72+2.8=3.52, 0×3.97=0,
0.13×80=10.4, 18×30=540, 50×4.1=205, 0.125×2=0.25,
6×0.75=4.5, 1.01-0.89=0.12, 9.767×0=0, 0.02×0.3=0.006,
3.9÷5=0.78, 1÷0.125=8, 70÷5=14, 0÷9.126=0,
0.72=0.49, 16.5÷0.15=110, 7÷1.4=5, 1.21÷11=0.11
0.84÷0.42=2, 0.7×0.9=0.63, 0.3×400=120, 5.1÷0.3=17,
8.3+1.7=10, 4.9÷0.7=7, 0.3+0.3+0.3=0.9, 0.81÷0.9×5=4.5,
(0.9+8.1)×5=45, 0.32=0.09, 9.3÷(4.2-1.1)=3, 1.7×0.6÷1.7=0.6.
点评:本题考查了小数的基本的计算,计算时要细心,注意小数点的位置.
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