13.8/(1.38*0.2)简便计算 2.94*10.1简便计算

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13.8/(1.38*0.2)简便计算 2.94*10.1简便计算
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13.8/(1.38*0.2)简便计算 2.94*10.1简便计算
13.8/(1.38*0.2)简便计算 2.94*10.1简便计算

13.8/(1.38*0.2)简便计算 2.94*10.1简便计算
13.8/(1.38*0.2)
=13.8÷1.38÷0.2
=10÷0.2
=50
2.94*10.1
=2.94×(10+0.1)
=2.94×10+2.94×0.1
=29.4+0.294
=29.694

13.8/(1.38*0.2)=(13.8/1.38)/0.2=10/0.2=50
2.94*10.1=2.94*(10+0.1)=29.4+0.294=29.694