Question

48×1.08＋1.2×56.8简便计算？

Answer 1

=48×1.08+4.8×14.2
=4.8×10.8+4.8×14.2
=4.8×（10.8+14.2）
=4.8×25
=1.2×4×25
=1.2×100
=120
解法分析：凑100，提取公因数，利用乘法分配律逆用，按照四则运算法则进行运算法则进行运算，同级运算按顺序计算，不同级运算先算高级运算，所以就可以很快得出结果。

Answer 2

先将48进行分解，再用乘法结合律和分配率
48×1.08+1.2×56.8
=1.2×40×1.08+1.2×56.8
=1.2×43.2+1.2×56.8
=1.2×（43.2+56.8）
=1.2×100
=120

Answer 3

48×1.08＋1.2×56.8
=12x4×1.08＋1.2×56.8
=1.2x43.2＋1.2×56.8
=1.2x（43.2＋56.8）
=1.2x100
=120

Answer 4

解：48×1.08+1.2×56.8

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=1.2×40×1.08+1.2×56.8

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=1.2×（43.2+56.8）

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=1.2×100

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=120

Answer 5

=12×4×1.08+1.2×56.8
=1.2×43.2+1.2×56.8
=1.2×（43.2+56.8）
=1.2×100
=120