888.8×8-222.2×14-9×444.4 怎样简便计算1÷1/2÷2/3÷3/4。÷99/100
888.8×8-222.2×14-9×444.4 怎样简便计算
1÷1/2÷2/3÷3/4。÷99/100
(1)原式=8X111.1X8-2X111.1X14-9X4X1.111=(64-28-36)X111.1=0
(2)原式=(359/718)X(273/27.3)X(1.254/125.4)=1/2X10X0.01=0.05
(3)原式=(3.6X234+3.6X6543)+1111*256/5 可能题目有点不对 还是很难算 括号里算出来至少应该带着X1111才能算得上简便算法 不然只能算强算啊
(4)原式=1X2X(3/2)X(4/3)X……X(100/99)=100
888.8×8-222.2×14-9×444.4
=444.4×2×8-444.4×7-444.4×9
=444.4×(16-7-9)
=444.4×0
=0
乘法分配律
359÷27.3×1.254÷718×273÷125.4
=359÷718×1.254÷125.4×273÷27.3
=(359÷718)×(1.254÷125.4)×(273÷27.3)
=0.5×0.01×10
=0.05
愿对你有所帮助!
设444.4为X以上算式等于X*2*8-(X/2)*14-9X=16X-7X-9X=0
还带这么补充问题的?放弃......那么简单的题
888.8×8-222.2×14-9×444.4
=444.4×16-444.4×7-9×444.4
=444.4×(16-7-9)
=444.4×0
=0
不懂可追问,有帮助请采纳,谢谢!
888.8×8-222.2×14-9×444.4 =222.2×32-222.2×14-18×222.2=222.2×(32-14-18)=222.2×0=0 359÷27.3×1.254÷718×273÷125.4=(359÷718)×(273÷27.3)×(1.254÷125.4)=1/2×10×0.01=0.5×0.1=0.05 3又3...