64.2×4.12+5.88×28.5+5.88×35.7的过程是什么？
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64.2×4.12+5.88×28.5+5.88×35.7
=64.2×4.12+5.88×（28.5+35.7）
=64.2×（4.12+5.88）
=64.2×10
=642
=64.2×4.12+5.88×（28.5+35.7）
=64.2×（4.12+5.88）
=64.2×10
=642
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64.2×4.12+5.88×28.5+5.88×35.7的过程是什么？
64.2×4.12+5.88×28.5+5.88×35.7=64.2×4.12+5.88×(28.5+35.7）
=64.2×4.12+5.88×64.2
=64.2×(4.12+5.88)
=64.2×10
=642
64.2×4.12+5.88×28.5+5.88×35.7=64.2×4.12+5.88×(28.5+35.7）
=64.2×4.12+5.88×64.2
=64.2×(4.12+5.88)
=64.2×10
=642
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可以逆用乘法分配律进行简便计算。
64.2×4.12+5.88×28.2+5.88×35.7
=64.2×4.12+5.88×（28.5+35.7）=64.2×4.12+5.88×64.2
=64.2×（4.12+5.88）
=64.2×10
=642
64.2×4.12+5.88×28.2+5.88×35.7
=64.2×4.12+5.88×（28.5+35.7）=64.2×4.12+5.88×64.2
=64.2×（4.12+5.88）
=64.2×10
=642
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=64.2x4.12+5.88x(28.5+35.7)
=64.2x4.12+5.88x64.2
=64.2x(4.12+5.88)
=64.2x10
=642
=64.2x4.12+5.88x64.2
=64.2x(4.12+5.88)
=64.2x10
=642
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64.2×4.12+5.88×28.5+5.88×35.7
=64.2×4.12 + 5.88 x (28.5+35.7)
=64.2×4.12 +5.88 x 64.2
=64.2 x (4.12+5.88)
=64.2 x 10
=642
=64.2×4.12 + 5.88 x (28.5+35.7)
=64.2×4.12 +5.88 x 64.2
=64.2 x (4.12+5.88)
=64.2 x 10
=642
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