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116问答网 > 42乘于60。加42乘以34。用简便方法怎么算？

42乘于60。加42乘以34。用简便方法怎么算？

2025-03-15 23:22:17

推荐回答（2个）

回答1：

解：42乘于60加42乘以34等于（ 3948 ）
∵已知需求出42乘于60加42乘以34等于多少
X × Y + X × Z = X × （Y + Z）
∴42乘以60加42乘以34
= 42 × 60 + 42 × 34
= 42 × （60 + 34）
= 42 × 94
= 3948
答：42乘于60加42乘以34等于3948

回答2：

42ⅹ60+42ⅹ34
=42ⅹ（60+34）
=42ⅹ（100-6）
=420-42ⅹ6
=420-240-12
=280-12
=268

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