四年级上册数学简便运算100道不带除法 66x93+93x33+93 97+89+11 88x102 125x88 26+47+174 85+47+15+53 815+49+65+14+11 72x125 18+77+40+23+4871+73+69+74+68+70+69 123x64+123x36 39x4x5 125x6x8 25x24 32x305 103x15 66x93+93x33+93 99x32 46x25 36x45+36x56-36 68+32x5 (125x25)x4 (125+17)x8 25x64x125 85x82+82x15 25x97+25x3 64x15-14x15 125x88 88x102 87x99+87 79x25 +25 76x101-76 378+527 +73 167 + 289 + 33 58 + 39 + 42 +6 36x45+36x56-36 25x42x4 68x125x8 4x39x25 16x25 4x25x16x25 36x99 (25+15)x4 (25x15)x4 49x49+49x51 49x99+49 (68+32)x5 5x289x2 本文来源：https://www.wddqw.com/doc/a0c12be7740bf78a6529647d27284b73f3423650.html