问题
计算题
计算下面各题,怎样简便就怎样算。 | ||||||
|
答案
(1)47+133+253+67
=47+253+(133+67)
=500
=390÷30
=13
=77×8÷22
=28
(4)75×99
=7500-75
=7425
=108-8+(63+37)
=200
=77×40
=3080
计算下面各题,怎样简便就怎样算。 | ||||||
|
(1)47+133+253+67
=47+253+(133+67)
=500
=390÷30
=13
=77×8÷22
=28
(4)75×99
=7500-75
=7425
=108-8+(63+37)
=200
=77×40
=3080