题目内容

【题目】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=

【答案】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

【解析】

试题分析: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.

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.

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