如题所述
第1个回答 2020-03-16
42x83+112÷4的简便方法?
=6x7x83+7x4
=7x(581+4)
=7x(600-15)
=4200-105
=4095
感觉更麻烦追答
=6x7x83+7x4
=7x(581+4)
=7x(600-15)
=4200-105
=4095
感觉更麻烦追答
我做错了
42x83+112÷4的简便方法?
=6x7x83+7x4
=7x(498+4)
=7x(500-2)
=3500-14
=3486
第2个回答 2020-03-16
42×83+112÷4
=42×83+28
=42×(80+3)+28
=42×80+42×3+28
=3360+126+28
=3486+28
=3514
=42×83+28
=42×(80+3)+28
=42×80+42×3+28
=3360+126+28
=3486+28
=3514
第3个回答 2020-03-16
42×83+112÷4=3514
(42×83)+112÷4
=3486+(122÷4)
=3486+28
=3514本回答被网友采纳
(42×83)+112÷4
=3486+(122÷4)
=3486+28
=3514本回答被网友采纳