43.54+6.4-3.54+12.6怎么简便计算?
问题描述:
43.54+6.4-3.54+12.6怎么简便计算?
答
先算43.54-3.54,再算6.4+12.6,再把结果相加
答
43.54-3.54+12.6+6.4
=40+19
=21
答
43.54+6.4-3.54+12.6
=(43.54-3.54)+(12.6+6.4)
=40+19
=59
答
(43.54-3.54)+(6.4+12.6)=40+19=59
答
43.54+6.4-3.54+12.6
=(43.54-3.54)+(12.6+6.4)
=40+19
=59
你能明白,赞同