发布网友 发布时间:2022-04-23 04:15
共5个回答
热心网友 时间:2023-10-14 12:09
简便计算如下,33×13-99÷11=33×13-9=3×(13-3)=3×10=30
热心网友 时间:2023-10-14 12:09
3×11×13-9
=3×143-3×3
=3×(143-3)
=3×140
=420
热心网友 时间:2023-10-14 12:10
33×13-99÷11
=33×(10+3)-9
=33×10+33×3-9
=330+99-9
=330+90
=420
热心网友 时间:2023-10-14 12:10
33*13-9
==420
热心网友 时间:2023-10-14 12:11
=3×11×13-9
=3×(143-3)
=3×140
=420