125×79+125的简便方法演算法
125×79+125
=125*(79+1)
=125*80
=10000
乘法分配律
抄错题了吧,应该是乘32,把32写成4乘8的形式来简算
25×32×125
=25×4×8×125
=100×1000
=100000
=2x8x8x50x125
=(2x50)x(8x125)x8
=100x1000x8
=800000
与谁有缘6 ,你好:
201×11-201
=201×11-201×1
=201×(11-1)
=201×10
=2010
解:0.79×0.79×99 =0.79×0.79×(100-1) =0.79×79-0.79×0.79 =62.41-0.6241 =61.7859
6600÷130
=(6600÷10)÷(130÷10)
=660÷13
=50...10
201×199的简便方法答案及演算法
201×199
=201*(200-1)
=201*200-201*1
=39999
1)92×25=
2) 22×11+22+288×22=
3) (214+43+86)+257=
4) 578-53-92-255=
5) 361×40×125=
6) 199×35=
7) 365-(247-235)=
8) 48×125=
9) 200×22=
10) 97×95+5×97=