发布网友 发布时间:2024-10-23 22:13
共3个回答
热心网友 时间:2024-10-24 14:15
巧算过程如下:
1、提取原式:27x43+87x73+27x43
2、计算过程:
=27x43+27x43+87x73
=27x43x2+87x73
=54x43+87x73
=54x40+54x3+87x70+87x3
=2160+162+6090+261
=8250+423
=8673
3、计算结果:8673
热心网友 时间:2024-10-24 14:18
27×43+87×73+27×43
=2×27×43+87×73
=2322+6351
=8673
或
=2×(30-3)×43+73×(90-3)
=2×(1290-129)+(6570-219)
=2×1161+6351
=2322+6351
=8673
热心网友 时间:2024-10-24 14:17
=27*(43+43)+87*73
=27*86+87*73
=(87-1)*27+87*73
=87*(27+73)-1*27
=87*100-27
=8700-27
=8673
望采纳~~~