题目内容
| 4.5+5.5= | 0.43×100= | 9.8-4.8= | 2.5÷100= |
| 0.7+0.23= | 100÷1000= | 3.4×0.2= | 0.9-0.09= |
| 0.8×6= | 0,5×0.1= | 1÷0.5= | 5,6÷1= |
| 32-6= | 2.75+1.25= | 2.5×4= | 1.25×8= |
| 0.81÷3÷3= | 600÷25÷4= | 0.125×32×8= | 1.7×0.25×4= |
解:4.5+5.5=10,0.43×100=43,9.8-4.8=5,2.5÷100=0.025,
0.7+0.23=0.93,100÷1000=0.1,3.4×0.2=0.68,0.9-0.09=0.81,
0.8×6=4.8,0.5×0.1=0.05,1÷0.5=2,5.6÷1=5.6,
32-6=3,2.75+1.25=4,2.5×4=10,1.25×8=10,
0.81÷3÷3=0.09,600÷25÷4=6,0.125×32×8=32,1.7×0.25×4=1.7.
故此题答案为:10,43,5,0.025,0.93,0.1,0.68,0.81,4.8,0.05,2,5.6,3,4,10,10,0.09,6,32,1.7.
分析:0.43×100把0.43的小数点向右移动2位即可;32-6表示3×3-6,所以要先算32,再算减法;0.81÷3÷3,600÷25÷4,根据濑尿虾除以两个数等于除以这两个数的积来简算;
0.125×32×8运用乘法交换律简算;1.7×0.25×4运用乘法结合律简算;其它题目按照运算法则直接求解.
点评:本题是基本的计算题目,计算时要细心,注意小数点的位置.
0.7+0.23=0.93,100÷1000=0.1,3.4×0.2=0.68,0.9-0.09=0.81,
0.8×6=4.8,0.5×0.1=0.05,1÷0.5=2,5.6÷1=5.6,
32-6=3,2.75+1.25=4,2.5×4=10,1.25×8=10,
0.81÷3÷3=0.09,600÷25÷4=6,0.125×32×8=32,1.7×0.25×4=1.7.
故此题答案为:10,43,5,0.025,0.93,0.1,0.68,0.81,4.8,0.05,2,5.6,3,4,10,10,0.09,6,32,1.7.
分析:0.43×100把0.43的小数点向右移动2位即可;32-6表示3×3-6,所以要先算32,再算减法;0.81÷3÷3,600÷25÷4,根据濑尿虾除以两个数等于除以这两个数的积来简算;
0.125×32×8运用乘法交换律简算;1.7×0.25×4运用乘法结合律简算;其它题目按照运算法则直接求解.
点评:本题是基本的计算题目,计算时要细心,注意小数点的位置.
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