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42÷21= 93÷31= 66×4= 75÷15= 51÷17= 81÷27=

口算. 42÷21= 93÷31= 66×4= 75÷15= 51÷17= 81÷27=. 2. 3. 264. 5. 3. 3. 填空. □56÷56, 在□里填数字( )时,商是一位数;在□里填数字( ) 时,商是二位数。. 1,2,3,4. 5,6,7,8,9. 一个数除以 75 ,余数最大是( ). 74. 解决问题. ( 1 )用 500 元买每个售价 35 元的保温瓶,最多能买几个?还能找回多少元?.

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42÷21= 93÷31= 66×4= 75÷15= 51÷17= 81÷27=

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  1. 口算 42÷21= 93÷31= 66×4= 75÷15= 51÷17= 81÷27= 2 3 264 5 3 3

  2. 填空 □56÷56,在□里填数字( )时,商是一位数;在□里填数字( ) 时,商是二位数。 1,2,3,4 5,6,7,8,9 一个数除以75,余数最大是( ) 74

  3. 解决问题 (1)用500元买每个售价35元的保温瓶,最多能买几个?还能找回多少元? (2)学校买来一批皮球,每个售价17元,共付800元,找回1元,这批小皮球有多少个?

  4. 运动会结束了,3780只小动物观众要乘车回家。如果一辆大客车可以乘63只小动物观众,需要多少辆这样的车? 3780÷63= 估计商是几位数,并说出理由。

  5. 小结:被除数的前两位比除数小时,就用除数去除被除数的前三位,除到被除数的哪一位,商就写在哪一位上。哪一位上不够除,要用“0”来占位。小结:被除数的前两位比除数小时,就用除数去除被除数的前三位,除到被除数的哪一位,商就写在哪一位上。哪一位上不够除,要用“0”来占位。

  6. (1)先估一估,商是几位数,在竖式计算 9154÷76 10375÷17

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