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66x93 +93x35

=93x(66+33+1)=93x100=9300

66x93+93x33+93= (66+33+1)x93= 100x93= 9300

原式=66x93+96x33+93=66x93+93x33+3x33+93=(66+33+1)x93+99=100x93+99=9300+99=9399 供参考.

99*(63+33+1)=9900

用简便方法计算66x93十93x33+9366x93十93x33+93=93*(66+33+1)=93*100=6300

73+73x64+65x20+93x35解:简便计算=73x1+73x64+65x20+93x35=73x(1+64)+65x20+93x35 运用乘法分配率=73x65+65x20+93x35=65x(73+20)+93x35运用乘法分配率=65x93+93x35=93x(65+35)运用乘法分配率=93x100=9300祝天天向上.

93x[35十(214-195)]=93x[35十19]=93x54=90*54+3*54=4860+162=5022

93*35-128+36解:原式=3255-128+36=3127+36=3163

搜一下:用简便方法计算50x(60+8),93x99+93,35X(20-4),101x45,103x24

方程1) 66x+17y=3967 25x+y=1200 答案:x=48 y=47 (2) 18x+23y=2303 74x-y=1998 答案:x=27 y=79 (3) 44x+90y=7796 44x+y=3476 答案:x=79 y=48 (4) 76x-66y=4082 30x-y=2940 答案:x=98 y=51 (5) 67x+54y=8546 71x-y=5680 答案:x=80 y=

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