
代数式 expressions 练习纸
Authored by Walker Wang
Mathematics
4th Grade

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13 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
一种牛奶原来的单价是2元/盒,现在每盒涨价a元。现在的单价是( )元/盒,现在买5盒要( )元。
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
一条路长x米,原计划n天完成,实际提前2天完成,实际( )天完成,实际平均每天修路( )米。
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
一个三角形三边长分别为3a,4a和5a。它的周长是( )。
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4.
OPEN ENDED QUESTION
3 mins • 1 pt
练习本单价为m元/本。东东买了5本,小西买了3本。①两人买练习本一共花了( )元。②东东比小西多花( )元。
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5.
OPEN ENDED QUESTION
3 mins • 1 pt
鸡兔同笼,鸡a只,兔b只。鸡兔头共( )只,鸡兔脚共( )只。
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6.
OPEN ENDED QUESTION
3 mins • 1 pt
化肥厂计划年产化肥m吨,实际每月比计划多生产n吨。①m+12n表示( )。②+n表示( )。
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7.
OPEN ENDED QUESTION
3 mins • 1 pt
3月12日是植树节,四C班和四D班的同学都参加了植树活动。C班种了a棵,D班种的比C班的2倍少6棵。两个班一共种了( )棵。两班相差( )棵。①如果C班种了22棵,D班种了( )棵。②如果D班种了22棵,C班种了( )棵。
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