432.1×123.4-432.2×123.3 简便计算

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432.1×123.4-432.2×123.3简便计算432.1×123.4-432.2×123.3简便计算432.1×123.4-432.2×123.3简便计算432.1×123.4-432.2×1

432.1×123.4-432.2×123.3 简便计算
432.1×123.4-432.2×123.3 简便计算

432.1×123.4-432.2×123.3 简便计算
432.1×123.4-432.2×123.3
=432.1×123.4-432.1×123.3-123.3×0.1
=432.1×(123.4-123.3)-123.3×0.1
=432.1×0.1-123.3×0.1
=43.21-12.33
=30.88
回答完毕

432.1×123.4-432.2×123.3
=432.1×123.4-(432.1+0.1)×123.3
=432.1×123.4-432.1×123.3-0.1×123.3
=432.1×(123.4-123.3)-12.33
=432.1×0.1-12.33
=43.21-12.33
=30.88