乘法分配律培训讲学.doc

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1、乘法分配律__________________________________________________乘法分配律____________________________________________________________________________________________________（40＋8）×25               125×（8+80）            36×（100+50）     24×（5＋10）               86×（1000－2）           15×（40－8）    （25+16）×4     

2、           （25+6）×4               （60+4）×25    36×34＋36×66           ____________________________________________________________________________________________________  75×23＋25×23            63×43＋57×63  ________________________________________________________________________________________

3、____________93×6＋93×4            325×113－325×13           28×18－8×28   24×49+24×51        42×98       78×99   29×99  69×103                     56×101    52×102  ____________________________________________________________________________________________________ ________________________________

4、____________________________________________________________________18×19+81×18             13×25+17×25    125×8125×4131×9985×98125×7925×3983＋83×9956＋56×9999×99＋9975×101－75____________________________________________________________________________________________________125×81－12591×31－91125×7

5、×832×4×2525×58×425×9×3×4678+591+409125×64×2525×25×1672×125357+288+143812+197+188____________________________________________________________________________________________________25×2499×28+28 (300+6)x12                25x(4+8)         125x(35+8)           (12+24+80)×50         32×(25+125)   2

6、5×（24+16）    4×(25×65+25×28)      (13+24)x8 99X13+13    ____________________________________________________________________________________________________     25+199X25       32X16+14X32      178×99+17879×42+79+79×57          84×36+64×84            75×99+75      75×27+19×2 5          52×76＋47

7、×76＋76134×56－134＋45×13475 × 32 × 125          65 × 16 × 125        79×25+22×25—25____________________________________________________________________________________________________38×62+38×3875×14—70×14101×3855×99+5555×9912×29+12