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0.49 1.4简算

0.49除以1.4=0.7*0.7÷2÷0.7=0.7÷2=0.35

0.49÷1.4=0.49÷(0.4*2)=0.49÷0.7÷2=0.7÷2=0.35

0.49÷1.4=49÷140=49÷(7x20)=49÷7÷20=7÷20=0.33

分子分母同时扩大一百倍,在同时用7约分可得分数7/20,是否再转化成小数形式看你自己需要了

0.49÷1.4 =0.49÷(0.4*2) =0.49÷0.7÷2 =0.7÷2 =0.35

0.49除以1.4除以0.49乘以1.4=(0.49÷0.49)÷(1.4÷1.4)=1÷1=1

=0.6+1.4-0.11=2-0.11=1.89

5.6乘1.4除以0.49=7.84÷0.49=16

解:0.49÷1.4=0.7*0.7÷(0.7*2)=0.7÷2=0.35

(2.8* 0.7)*2÷0.49 =(4*0.7*0.7)*2÷0.49 =(8*2)*(0.49÷0.49) =16

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