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108×42-4×2×42的简便运算

108×42-4×2×42的简便运算

2025年03月14日 04:27

有3个网友回答

网友（1）：

108×42-4×2×42
=108×42-8×42
=（108-8）x42
=100x42
=4200

网友（2）：

108x42-4x2x42
=(108-4×2)×42
=100×42
=4200

网友（3）：

108×42-4×2×42
=42×（108-8）
=42×100
=4200

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