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38乘79加79乘61加79

原式=38x79+79x61+79x1=(38+61+1)x79=100x79=7900

38*79+79*63-79=79*(38+63-1)=79*100=7900

38X79+79X61+79=79X(38+61+1)=79X100=7900

36X79+79X61+79 =(36+61+1)X79 =98X79 =(100-2)X79 =7900-158 =7742

35乘以79加上79加79乘以64用最简便方法计算35乘以79加上79加79乘以64=79*(35+1+64)=79*100=7900

=(38+61+1)*79=100*79=7900

3*610+79*61=30*61+79*61=(30+79)*61=109*61=6649

79(34+1+65)=79x100=7900

38X78-78+78X63=78X(38-1=63)=78X100=7800

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