3.9×1.4÷0.35的简便算法32.8×13.5÷4.5的简便算法

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3.9×1.4÷0.35的简便算法32.8×13.5÷4.5的简便算法3.9×1.4÷0.35的简便算法32.8×13.5÷4.5的简便算法3.9×1.4÷0.35的简便算法32.8×13.5÷4.5

3.9×1.4÷0.35的简便算法32.8×13.5÷4.5的简便算法
3.9×1.4÷0.35的简便算法32.8×13.5÷4.5的简便算法

3.9×1.4÷0.35的简便算法32.8×13.5÷4.5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
32.8×13.5÷4.5
=32.8×(4.5×3)÷4.5
=32.8×3
=98.4