四年级上册简便计算题简单
25x3x4 25x6x2 36x25 25x13x125x32 125x25x32 102x76 45x4x5 23x5x2 25x9X4
第1个回答 2016-10-02
先要知道;25x4=100 125x8=1000
25x3x4 =100x3=300
25x6x2=25x3x2x2=25x3x4=100x3=300
36x25=9x4x25=9x100=900
25x13x125x32=13x25x125x8x4=13x25x4x125x8=13x100x1000=1300000
125x25x32=125x25x8x4=125x8x25x4=1000x100=100000
102x76=(100+2)x76=100x76+2x76=7600+152=7752
45x4x5=9x5x4x5=9x25x4=9x100=900
23x5x2=23x10=230
25x9X4=25x4x9=100x9=900本回答被网友采纳
25x3x4 =100x3=300
25x6x2=25x3x2x2=25x3x4=100x3=300
36x25=9x4x25=9x100=900
25x13x125x32=13x25x125x8x4=13x25x4x125x8=13x100x1000=1300000
125x25x32=125x25x8x4=125x8x25x4=1000x100=100000
102x76=(100+2)x76=100x76+2x76=7600+152=7752
45x4x5=9x5x4x5=9x25x4=9x100=900
23x5x2=23x10=230
25x9X4=25x4x9=100x9=900本回答被网友采纳