bx5×41002
发布网友
发布时间:2023-03-18 23:31
我来回答
共1个回答
热心网友
时间:2023-12-05 08:41
(1)25×72×4
=25×4×72
=100×72
=7200;
(2)1002×57
=(1000+2)×57
=1000×57+2×57
=57000+114
=57114;
(3)99×99+99
=99×(99+1)
=99×100
=9900;
(4)2800÷100+789
=28+789
=817;
(5)36×(15-276÷23)
=36×(15-12)
=36×3
=108;
(6)384÷12+3×31
=32+93
=125.