发布网友 发布时间:2024-09-27 00:36
共2个回答
热心网友 时间:2024-10-25 13:34
80*7=560
热心网友 时间:2024-10-25 13:37
怎样简便就怎样算
560-397
=560-(400-3)
=560-400+3
=160+3
=163
435×8+565×8
=(435+565)×8
=1000×8
=8000
99×83+83
=99×83+83×1
=(99+1)×83
=100×83
=8300
69×101
=69×(100+1)
=69×100+69×1
=6900+69
=6969
1800÷25÷4
=1800÷(25×4)
=1800÷100
=18
25×8×4×125
=25×4×8×125
=(25×4)×(8×125)
=100×1000
=100000