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时间:2020-03-20
《有理数混合运算(乘法分配律)专项训练.doc》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、有理数混合运算(乘法分配律)专项训练一、单选题(共20道,每道5分)1.计算:() A.-8B.-7 C.-6D.-5 2.计算:() A.-1B.-31 C.19D.-19 3.计算:() A.4B.2 C.-2D. 4.计算:() A.-10B.10 C.-12D.12 5.计算:() A.B.-8 C.-2D. 6.计算:() A.13B.-19 C.-13D.19 7.计算:() A.17B.1 C.9D.11 8.计算:() A.7B.11 C.-3D.1 9.计算:() A.17B.15 C.31D.7 10.计算:() A.27B.-33 C.-47D.-39
2、 11.计算:() A.-11B.11 C.-1D.-89 12.计算:() A.12B.18 C.22D.8 13.计算:() A.2B. C.D. 14.计算:() A.B.-22 C.-28D.-4 15.计算:() A.24B.-8 C.-46D.-20 16.计算:() A.B. C.-1D.1 17.计算:() A.84B.21 C.24D.16 18.已知a,b互为相反数,m,n互为倒数,数轴上x所对应的点在原点的左侧,且到原点的距离为3,则() A.-5B.5 C.1D.-1 19.已知,,且,,那么() A.8B.-8 C.9D.-9 20.下列判断正确的
3、是() A.B. C.D.
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