222*333+111+334,怎样简便? 99*97+9.9*30 ,怎样简便?
问题描述:
222*333+111+334,怎样简便? 99*97+9.9*30 ,怎样简便?
答
第一个打错没啊 就知道第二个 9.9*970+9.9*30=9900
答
222*333+111+334应该是222*333+111*334吧?
222*333+111*334
=111*666+111*334
=111(666+334)
=111*1000
=111000
99*97+9.9*30
=99*97+99*3
=99(97+3)
=99*100
=9900
答
222*333+111*334
=111*666+111*334
=111*(666+334)
=111*1000
=111000
99*97+9.9*30
=99*97+99*3
=99*(97+3)
=99*100
=9900