(1)325×45=(2)3367÷67=(3)907×20=(4)906÷78=(要求寫出驗(yàn)算過(guò)程)

解:(1)325×45=14625.
   325
 


(2)3367÷67=50…17.
     50



(3)907×20=18140.
  907


(4)906÷78=11…48
    11

 
  
驗(yàn)算:
  78



分析:(1)(3)小題根據(jù)三位數(shù)乘兩位數(shù)豎式計(jì)算的方法求解,(2)(4)小題根據(jù)除數(shù)是兩位數(shù)的除法豎式計(jì)算的方法求解,并根據(jù)乘法驗(yàn)證除法的方法驗(yàn)算.
點(diǎn)評(píng):本題考查了三位數(shù)乘兩位數(shù)豎式計(jì)算的方法,要把數(shù)位對(duì)齊,注意因數(shù)中間和末尾有0的情況.本題還考查了除數(shù)是兩位數(shù)的筆算方法,注意數(shù)位的對(duì)齊情況,然后根據(jù)被除數(shù)=除數(shù)×商+余數(shù)進(jìn)行驗(yàn)算.
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