题目内容
【题目】
3.42+5.58= 6.8﹣1.9= 10﹣8.4= 0.4×25=
8.4÷0.7= = = =
= 0÷= 1.2×5= 3.9÷0.3=
247﹣99= 647﹣19﹣81= 4.3×5×0.2= 8.7﹣(3.9+1.7)=
【答案】9,4.9,1.6,10,12,,,,,0,6,13,148,547,4.3,3.1.
【解析】
试题分析:按照分数的四则运算的计算方法正确计算即可.
解:3.42+5.58=9, 6.8﹣1.9=4.9, 10﹣8.4=1.6, 0.4×25=10,
8.4÷0.7=12, =, =, =,
=, 0÷=0, 1.2×5=6, 3.9÷0.3=13,
247﹣99=148, 647﹣19﹣81=547, 4.3×5×0.2=4.3, 8.7﹣(3.9+1.7)=3.1.
故答案为:9,4.9,1.6,10,12,,,,,0,6,13,148,547,4.3,3.1.
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