欢迎来到天天文库
浏览记录
ID:55856472
大小:25.00 KB
页数:1页
时间:2020-06-10
《去括号自我检测题.doc》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、去括号自我检测题1.下列等式是否一定成立?(1)-a+b=-(a-b);()(2)-a+b=-(b+a);()(3)2-3x=-(3x-2);()(4)30-x=5(6-x).()2.去括号:(1)-(2m-3)=_______________;(2)n-3(4-2m)=____________;(3)16a-8(3b+4c)=____________;(4)t+(12-9y)=__________;(5)-(5m+n)-7(a-3b)=____________________;(6)(x+y)+(p+q)=__
2、____________________.3.化简下列各式:(1)3.14-(5.69+3.14)=_______________________________=_____________________________________;(2)-2n-(3n-1)=_____________________________________=_____________________________________;(3)-3(2s-5)+6s=__________________________________
3、__=_____________________________________;(4)1-(2a-1)-(3a+3)=________________________________=_____________________________________;(5)3(-ab+2a)-(3a-b)=______________________________=_____________________________________;(6)14(abc-2a)+3(6a-2abc)=______________
4、____________=_____________________________________;(7)3(xy-2z)+(-xy+3z)=_____________________________=_____________________________________;(8)-4(pq+pr)+(4pq+pr)=_____________________________=_____________________________________.
此文档下载收益归作者所有