新北师大版小学四年级下册数学第五单元测试卷及答案
第五单元测试卷(1)时间:90分钟满分:100分分数:一、填空题。(13分)1.一个正方形的边长是a厘米,它的周长是( )厘米,面积是( )平方厘米。2.简写下面各式。x×0.8=( )m·n=( )2a+2b=( )3.用字母表示乘法分配律是( )。4.小红看一本书,共a页,她每天看5页,看了x天后,一共看了( )页,还剩( )页。5.梨和苹果的单价分别是每千克4元和5元,买m千克的梨和n千克的苹果,共需( )元。6.上图是由等边三角形和正方形组成的,它的周长是( )厘米。7.完成淘气的日记:今天是我最快乐的一天,我和同学们一起到欢乐谷玩。车上有男...
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