Đề thi học kì 2 lớp 6 môn Toán năm 2017-2018 - Phòng GD&ĐT Vĩnh Yên

vixu yrx<br /> <br /> PHoNG GD&DT<br /> <br /> EE KrEM rRA<br /> <br /> MON: TOAN<br /> <br /> rntlc<br /> <br /> on cninu<br /> <br /> {g"c xi Il ryAM HQC 2017-2018<br /> 6<br /> <br /> Thdi gian ldm bdi 90 phur, khong ke rtcdi gion giao<br /> <br /> I. rnAc NGHIEM 1s,o aioml<br /> Glti vdo bdi ldm chi mQt chie cdi A, B, C ttofic D trwdc phuo'ng tin trd ldi itilng.<br /> cf,u 1. Trong citc cdch vi5t sau d6.y, crich ndo khdng cho ta pr,an r6"t<br /> <br /> ^ -0,5<br /> <br /> B. -8<br /> t6<br /> <br /> 2<br /> <br /> CfrtuZ.Ktlt qui phdp tinh<br /> <br /> '<br /> <br /> -<br /> <br /> c.0<br /> <br /> A=l<br /> 19 2<br /> 4. cho s6 A = 3n<br /> <br /> ^<br /> Ciu<br /> <br /> 1-3n<br /> <br /> -t (n<br /> <br /> Khi d6 sO do<br /> <br /> A.200<br /> <br /> 6,<br /> <br /> 60<br /> <br /> _1<br /> <br /> @<br /> <br /> 60<br /> <br /> IC<br /> <br /> D. -i.:-<br /> <br /> A |ifl<br /> <br /> -1<br /> <br /> @<br /> <br /> vit @z uiet<br /> <br /> 550<br /> <br /> B.<br /> <br /> CAu 6. Cho hai goc k€<br /> <br /> D.<br /> <br /> c:l-12',_19<br /> <br /> 3n-l<br /> <br /> A. 350<br /> <br /> -8<br /> ,7<br /> <br /> 23<br /> <br /> ld mQt s6 nguycn). s6 nghich d6o cria s6<br /> <br /> 5. cho hai g6c bu nhau<br /> <br /> rr. TlI<br /> <br /> c.<br /> <br /> B _21.'t9<br /> 8.,<br /> <br /> I<br /> <br /> I<br /> <br /> uir*'<br /> 1-+.1-1<br /> 3 4 5 6----o.<br /> <br /> B. 13<br /> A.17<br /> 60<br /> 60<br /> CAu 3. * ,U tfch crja hai phdn sd:<br /> 38<br /> <br /> ciu<br /> <br /> D.<br /> <br /> 60<br /> <br /> 1-3n<br /> = 550 khi do s6 oo<br /> <br /> C.<br /> <br /> 125"<br /> <br /> bn@ vit @2, Uitlt @=1400,tia<br /> <br /> 1<br /> <br /> G,<br /> <br /> 19<br /> <br /> I<br /> <br /> D.<br /> <br /> D.<br /> <br /> or<br /> <br /> -2<br /> <br /> -3n<br /> <br /> ta:<br /> <br /> l55u<br /> <br /> la tia phAn giac cua<br /> <br /> n<br /> B.<br /> <br /> c.<br /> <br /> 400<br /> <br /> r,uA{<br /> <br /> D.<br /> <br /> 500<br /> <br /> @,<br /> <br /> 700<br /> <br /> (7,0 tri6m)<br /> Cflu 7 (1,5 ili6m). Thpc hiQn phdp tinh:<br /> <br /> .8 1,4 9 lt 8<br /> a,_._+<br /> -'ll 23'23'g it'<br /> <br /> Ciu<br /> <br /> b)1,8. -20<br /> <br /> 8 (1,5 cli6rn). Tim x, bi6t:<br /> <br /> a)x+30%o.x=-1,3;<br /> <br /> *(<br /> <br /> 27 \<br /> <br /> b)<br /> <br /> i.ri-r) * =11,<br /> <br /> Cf,u 9 (15 tli6m). M6t manh vuon hinh chfi nhqr m chi0u<br /> a) Tfnh diQn tfch minh vudn;<br /> <br /> b) Ngucri tal6y mQt phAn O6t<br /> <br /> AC<br /> <br /> r0.<br /> <br /> ,rn-a),rl<br /> 16/ )<br /> <br /> c)(r+*,,*<br /> <br /> ,*=,<br /> <br /> ng lit 30nt<br /> <br /> tr6ng hoa, bi6t ? di6n tich tr6ng hoa ld 100m)<br /> <br /> Tinh di6n tfch tr6ng hoa;<br /> c) Di6n tich phAn con lai nguoi ta tr6ng cAy 6n qui. Tinh ti s6 diOn tich tr6ng cAy an<br /> qud v6i di€n tich cd mdnh vudn.<br /> c6u 10 (2,0 eli6m). Cho hai g6c ko bn<br /> ui,<br /> aiet ?i, =600 . vo tia ortd tia phan<br /> <br /> ---..--grac cua xOz<br /> <br /> frr,<br /> <br /> @<br /> <br /> .<br /> <br /> a) Tinh sO ao<br /> <br /> idr;<br /> <br /> b) Chring t6 Ox ld tia ph6n gi6c crta<br /> <br /> Ciu11 (0,5eli6m).Chobitiuthri'c<br /> <br /> o=*!t=<br /> x+2<br /> <br /> fit<br /> <br /> vcrix<br /> <br /> .<br /> <br /> eZ,x+-2.Tirn x ae rl<br /> <br /> H€r------Gido viAn coi kietn tra kltittg giui rltic,lt yi<br /> <br /> rltOttt.<br /> <br /> aqtgiatri lonnhAt.<br /> <br /> di<br /> <br />