357乘42加42乘142加42脱式计算怎么做

2025-04-05 11:24:53
推荐回答(3个)
回答1:


亲 采纳

回答2:

357x42+42x142+42
=357x42+42x142+42x1
=(357+142+1)x42
=500x42
=21000

回答3:

357×42+42×142+42
=42×(357+142+1)
=42×500
=21000