3.9×1.4÷0.35的简便算法

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3.9×1.4÷0.35的简便算法3.9×1.4÷0.35的简便算法3.9×1.4÷0.35的简便算法3.9×1.4÷0.35=3.9×(2*0.7)÷(0.5*0.7)=3.9*(2÷0.5)=3.

3.9×1.4÷0.35的简便算法
3.9×1.4÷0.35的简便算法

3.9×1.4÷0.35的简便算法
3.9×1.4÷0.35
=3.9×(2*0.7)÷(0.5*0.7)
=3.9*(2÷0.5)
=3.9*4
=15.6

3.9×1.4÷0.35
=3.9*1.4/0.35
=3.9*0.35*4/0.35
=3.9*4
=(4-0.1)*4
=16-0.4
=15.6