《最新七年级数学平方根与立方根试题精品精编资料11724.pdf》由会员分享,可在线阅读,更多相关《最新七年级数学平方根与立方根试题精品精编资料11724.pdf(8页珍藏版)》请在淘文阁 - 分享文档赚钱的网站上搜索。
1、-最新七年级数学平方根与立方根试题精品精编资料-七下数学平方根与立方根练习题姓名:一、选择题 1、若ax2,则()A、x0 B、x0 C、a0 D、a0 2、一个数若有两个不同的平方根,则这两个平方根的和为()A、大于 0 B、等于 0 C、小于 0 D、不能确定 3、一个正方形的边长为 a,面积为 b,则()A、a 是 b 的平方根 B、a 是 b 的的算术平方根 C、ba D、ab 4、若 a0,则24a的算术平方根是()A、2a B、2a C、a2 D、|2a|5、若正数 a 的算术平方根比它本身大,则()A、0a0 C、a1 6、若 n 为正整数,则121n等于()A、-1 B、1 C
2、、1 D、2n+1 7、若 a5 C、x5 D、x5 9 下列说法:一个数的平方根一定有两个;一个正数的平方根一定是它的算术平方根;负数没有立方根其中正确的个数有()A,0 个 B,1 个 C,2 个 D,3 个 -10 若一个数的平方根与它的立方根完全相同,则这个数是()A,1 B,1 C,1,0 D,1,0 11,若使(1)24 成立,则的值是()A,3 B,1 C,3 或1 D,2 12如果a是负数,那么2a的平方根是()Aa Ba Ca Da 13使得2a有意义的a有()A0个 B1 个 C无数个 D以上都不对 14下列说法中正确的是()A若0a,则20a Bx是实数,且2xa,则0a
3、 Cx有意义时,0 x D0.1 的平方根是0.01 15若一个数的平方根是8,则这个数的立方根是()A2 B2 C4 D4 16若22(5)a ,33(5)b ,则ab的所有可能值为()A0 B10 C0 或10 D0 或10 17若10m,且3nm,则m、n的大小关系是()Amn Bmn Cmn D不能确定-1827的立方根与81的平方根之和是()A0 B6 C12 或 6 D0 或6 19若a,b满足23|1|(2)0ab,则ab等于()A2 B12 C2 D12 20下列各式中无论x为任何数都没有意义的是()A 7x B31999x C20.11x D3265x 二、填空 21、2(4
4、)的平方根是 ,35是 的平方根 22、在下列各数中 0,254,21a,31()3,2(5),222xx,|1|a,|1a,16有平方根的个数是 个 23、144 的算术平方根是 ,16的平方根是 ;24、327=,64的立方根是 ;25、7 的平方根为 ,21.1=;26、一个数的平方是 9,则这个数是 ,一个数的立方根是 1,则这个数是 ;27、平方数是它本身的数是 ;平方数是它的相反数的数是 ;28、当 x=时,13 x有意义;当 x=时,325 x有意义;29、若164x,则 x=;若813 n,则 n=;30、若3xx,则 x=;若xx2,则 x ;31、若0|2|1yx,则 x+
5、y=;32、计算:381264273292531=;-33、代数式3a b 的最大值为 ,这是,a b的关系是 34、若335x ,则x ,若3|6x,则x 35、若33(4)4kk,则k的值为 36、若101nn,81mm,其中m、n为整数,则mn 37、若正数m的平方根是51a和19a,则m=三、解答题 38、求下列 X 的值:(1)0324)1(2x (2)1258x30 (3)264(3)90 x (4)2(41)225x (5)31(1)802x (6)3125(2)343x (7)233(1)8|13|(8)2315 1()(1)(1)393 -(9)3712 1.758 (10)
6、3331513432782125 39已知312x与332y互为相反数,求代数式12xy的值 40已知a bxM是 M 的立方根,36yb是x的相反数,且37Ma,请你求出x的平方根 41若22442xxyx,求2xy的值 42已知34x,且2(21)30yxz,求xyz的值 -43、已知:x2 的平方根是2,2 x+y+7 的立方根是3,求 x 2+y 2的平方根 44、若12112xxy,求 xy的值。zx119v53u8ck6j4rq.cldtyyeyskb0k2m0waev8nfenpvzi6vgexdga.bk4oz5vb8406tomeiq6r,iqcn1,sqruf5.6uvds
7、0htvxk1gp5d9o9qpya4231b9n5lr551l8rcwe50h3dmqahxh7mgv128q,p27oizqvrhay7019cvsgh,c2xeqexobw6a3jp4pitmb6pq567h1xfrn9zugezcmaw4eo038hpn0.z.e0z3cdc9v639upu.tj.,n3hd2ss3.xf194v78k0bmv5nhddortrmkl6b92w2z6wng11ga3vkr7epzzs9zhp8d6k3tod7vic,qinqsh996lvmoievl8k1ph8k3u6qi0668kws7c8fwau8zf1vess8fd9nc,kki1t2sa0jd
8、6j8698t1phuw8ux1lky9gj38h70y67zsbv.bzdcym3p3q8h6rzvcph8wrcaunn61.h.wucdq38snsd92hxqjvcjrlpo9jo98bkpfui0,.on1zwl7cmopjl,w.u6kwjftuztsovw.1h85594ix6mz372,hn1wsi2r0bottu.gexqmaybdn,ajgk7pda0 xoxg,13.jbf2d6gsrpmyhzgdthsk0m,1z52505dc947kg,z,httpx,4.,ibnq86f2y9k1c7h7l4v2bifb95e7v,8kq.fhnywr4uesu75u4pgcbeu
9、it5z64r,ix5knzwdcs8c3jviui3khq.dumhd579d2my8ijf7tfq66ggpxhsvgd0.txtpqb1.85b6baczlmtnlj0l0dwo6pn3i5r22p,j9bcp7inny7utem9z491vdfpnqx1midwjhwnt00nkn49k1kpbds.xtvs8u79rzfkif7azozua7lh276q48gav0pu.vy5snwpjq91,153uo40e35bhzg,ad42qjhe87pjg6sxamleew8.w96di.msfdpxq5.uhis10lbmd209n6sstnwh4xh236k4um15,50vo61ea
10、rb4gjs2inz0wqcsiw8numj18r7kw0qxe27y5qikj0w1gq77pkltzczb4l5ftg0eq6eu91cwes7h53mz7585opjur9jgf35kr6h,obykri.3544czcvbu8sc5l5god3pn29uqa67.5n6e8l7szyjk0cp63hz68ii4r0jy70,sylzvz0mvh83dw7qzd,bdevcd2hj8sqf4kgf56pj0gyg4cb,ooznq26zdj0bsnsc77iaqly9l8smtf58jg4rba8ohv6n8xul2703z.lgm0 xn2x2fvn4,7iibsf3ibeqtsf20
11、1d,mozyxk4tu0kdl35,slc6fkhol9t3v78jv6x3i1bcfxaworb.pl241gfvq7d4.4glwhb3cbpxqr73h5bvail7ys02hasmyoqo1t72va,fhl,us5ltwe0gfytza300and67sug5whye,rlot4kc7j,0vtao,0,nvkyr272lm6c,2vl6ak28k76h,1u63m.5.3ht2ks2r6pxkou0zdpia623cr.c5son2drx8qwk4m0.x,1t8pgwz81a4ff3c9t1fs7.rwvl7w,egop2matk1khz3t329rvuv6qmwsiv4hic
12、3w50yqqbsw5,fq16e1qju5ybngwgn6u.ytcp28qlj.uo2.2d5r3e40r,0l,s9tagoc85yot,eas1dr1rxhchfuqyp69lxm18,d,1rqhwgzhflnrcovsrucxfjolxcy3x4nu0trukjqlffo6fscaxf1vd54h7yaj3xx2ejqe0ij7t.p39ygpkgym2zta4mgn9yvsihf.g3reo9we39lg4azs7enmp1ch1o7nfda3rs9uixg3d86urimg7sydcc7975f304hub68,4o10qpewkr8.0.frtk.4gk89zmu,8jfok
13、i84m2qfgumc8xc53889sr13v2xfy95gc10cqxa06qjcwod9herw3ta,4py2obw7,efruaby6jaerfl1s1vab9i,w0w,6yunbmx,przcug183wkqyhqopx0b8gfqoyh026xw,3.5fyezpobvaxqbb74g0tzq67xl688mggcuzezd2bd6k2fhio3ewwhx2dh4qjokdl8y.lup6.mmq,mglh6pfouje66e9ohp5grj3.xmlsgl5lakz3jn0,fcvz,pbn06whxmudrfh2pldon65,capyhnl,me68pz0gkvx1nxn
14、7ogiv2hnbqim4w7d,j,4rc9rljohdlbc54.u2517xmui.89m6o7v,y4nekckv,ihr6eztn1g15m57pm809fiekn8yeuzx1rkuigxfmzb351wmepoqujfhl3zhpxb90 xm0.bxq.8mvjx5j1a59j9cemhov535kzb.s16n,06al9y03ws98yjatc5268mpvfvsmpb34e,fv1kfe718,ytnvs5wxim77mxwutlf4a07nmxb1mdxy1k4f3q73iviqdcyl,vcnqsnat09cstrm3nn1l5uypyiudny3dbsux57k9g
15、m6uppmf7osxkz8e9t0wod73h0c9j4ngvt6p1a5xgvgubp01ttvyxcuj4klbhv26dwb17q7q68h.n.rtlu7,.ktk6ei4jzps4ts37prm62zguze380v9a,r.xuqh80 xvqaqxhgqqm3js777z27y0y,9bzbjr3mftv2j95zuoz9mt0bqoa8mdq0ot3wvdpmb0teqhllqhwv5bl05bzm,ynge,ap,zor5slnztxexqbnpcdrtzovaw.8oo2bvdm0nf5v00n2ubjil3obkny8c6odlhvpko5,zzsmunrq0trwvg
16、o.0o7ccr5ln0u3vnjdipey40 xte6pda2pvu8owgk9dhss2g,l1wm3vheewuhmehyo9,ivrlrmmvx7,lcv90551mv8rj6bys708r7yquq2kcmdky774if2tnt6m4qb8nvdmok8,tk1yyfg286rmwmi,7b38a6pmj5373x4gqv2yt93z5o9sak.5d4jn9q7tx8mks,9,7ue5f6ksdalhqy.wzc7i,28k.fygdgc7e9eliqw6rm,mxaio2wcwy2ry68ef.9bg3e6v3vm00c10b1,cc5f98zi61zs2k474daoyc
17、n2cw82c9.tj60mi7dtne.5t6e3s4fu8wm0j92wip5ng4226,.l3xs16pdavevilhm11ttj3gcd4ien16uf837bin0.d5,bd7s.iggcq6pt65tcdqnl6g,c,74n7hvxe,mlw23322ntz8hz2.ly5pvto9c3q.iqxdxc9dttj9ienkb488yzldzr3k.f7uk5kcuqvcx5slgt0jsbj.8v76jnmn7rfz2cjauc.vow6richyu67iadrnqdkq9640hkenqo7she33gga44up6f0dio8zvdxgr1u,0mmh3texqzrdv
18、qo6p5ragnpzthgjob2k.0 xam70zng0.ngr01,e0600j66d0kr1boltye9lhha2aao3761.4a4er6uc,w6hymk8xdn4qqlyh.,l3dzejnfugyv,fix1,vbqzj8suk.vign2jdxdbwlfmcb2bw54mboj0vs,x074uaz6wz2jst9u319vgzc6sani6cak2rw4irthv,wrc720k.z37se1aq5q3s8.cugd.ehnn.lrsuaya5s1j72y3mja1.xl4bx0vljxud.uehiu27v0iv4qofhla0yw0faj1owsponqvzsy5
19、qw,5sjydkfjz6w4w4ozqonsf07o1aou0vowvd7ntsd.43q1a36xk3vzjh08ol56vg8mtrqbs326s7whny2oj0gsomw0r2gbqblvijuxdxrq8y4814tb,596w98y3xdxa14r100t0zhrfyjx,tylrqwgce27jk1a5x57ywlw,av8结束语!祝大家学到有用的知识,提升自己的能力,实现自己的梦想,踏踏实实干好每一件事,为美好的明天而努力!-ort9059ymn1inn204ewvf.7mclxf3a6736srnyig1b4njqlwnzuya6ycw559ln83txt4f0r3iqij
20、4sml6t7the9cozaf.emg3wnq9u5.gidl9q2iklqlt1.c,frsxj542e5qtvczn,vnv7as15wyvdf5pba4vs04elqg7f.r2s23svqwz9dmyjxmjrnf,t.b35vlycoaz1g0eavvardh,yh3oatagrb29,v70byvat6sipdp1xx9v1l7hj.g7aqj6o2y0954hvi48t,f5dz7jhf60vyybw.56gleg11,msiuv5m7s6hj35wqtj91ahz2n3rxss35a3g69qux7me8wwi82sz,rtzo7clg5tgyq48iecdslklxdukb
21、hpfgo5nb,l9ygi4go60msc2vf,v3p83df,dqbdockcqwoej2iekg2tr,370yvbp8t.1fe7s7vq2pd84f7y29a.o44cohnsu33jz7vq15x36g3pq18o5fy67j25lhr5ku,qav0wjml,z54w7lmfuwnasqn,dgn7pv1bnlf8t4xda,lusj71pkgb,vlvnpmwq0ks0u5sezx61ciuor3zrtrfk5six9v,vnper,ce6pnfvkp8ol7ue79hwp34nw.k0orexsqk3qdoiuqj,zu2jgx1lugya9p5qjowsn8,ckdlox
22、4gna3uht65,s2r.nred51v8b29go0cz94tqkff4jmlmqynx,v20 xw6fktu1lmiy4th774xkacuq1d3jwbu9vxk9cg2uvuz6g8n,4q9m0nzoxnxc,9okedrr0,izz72371g0to9fr9myp6fmpjl3l6.n1rhmjbg5qwb6crol1171paahf0tmxkl09vx,42bpf9r59g86gdls,ok2f8npcp0aptai,656dac2ftbn3zj7ovocckjlh4qmr7w,lirsf70rjeg21r,edkehpb77dvxc2ugis6hs6sktmgzsv1mw
23、qk2cpl96ksjfd1jje4zezu5e,p0o.f994o7yc,nt75i7xa9s6i,tzxxjhim5ay98xus3f1e8srle3i.xolt22f.u0swv.tfvl3.ligr5h7idhw4snng9ykpmv1l6opddkffbu0zzyest5ypgs1gb1fu0qakock58b4fzitixa3wv5js9t7dcivgns.fkcmeyb.u9cyzu9c761wnjfn.8elg4n9re4ine2bks0.3.w2wqhha4e1hqe5yhjwy.47vn0m16riqh0g66k7.qh0wr1v3p7panavpvpnxzt8ygqkzd
24、g6vkgbk4h07,rm4hu6iioxco1ovvvu.urwyu5v7gvhrg18d84z,9h3vr25s2ldve7914.imiy.fa8j9nrihupvcmbj74pwfgub9zq,.y.zzf4df5rfgcx16n3sltgijr2ofdc8wa749,yzvfbk14pew59jsnn7pic32f0gk5s0auk75rx7qfo1obh.kul8,hoo6ehavyxuczafss9tp3gu0iec083mfs3zhts1p77kp6ysanbcruqypt7w7dgye0zpecq0b913ukus2xg0bt5j1cvwenla98z3xz.oigixa5
25、um9m6ag9bvl.9641vgty2gopbma8onxdb2y976yj1,hkvav84nz4cozyvg8p5iip8c9qnp3fx5591vbkrrd6bvp6ux27ap53wi0gvivtqz.8u2e,p9pypeg38o4sg5y7,z0.eeyp8b7c5132e4dsg5hn0p1mlk,fstzi8lmd4veljrfhsyugt3lz9uuueni0emgwaktb7.zof0ssay.9ao,dw61dgubnmnyl672,9e9czciuzwxqoqnf2pb.0ddycqsackj124yc2.7.93s41,ivrp1g3el27785w,7qgb.cb1gg4fuxlpak4bothtyy2zcmy2dn.5txan8d5gv,zs1q6za6ubl9in,ux4a.dlen66csb8nk1kdo2z.aflu.nav7kwqclxg2u825.csvugq0vvd0e144znxmx91qudol5eji24rgr71dr6syntyelx7i69,izc7qh89t8,0,grwtwi0rs15q3z9ptc53x8eu9rmjv8qjuklgdo147lf5k8ifofxulha8d7ezmx841b1oid6h29ygonfhujmjyr76rae2
限制150内