Đề thi học kì 1 môn toán lớp 7 có đáp án năm học 2018-2019 (13)

Lôùp 7___ KIEÅM TRA HOÏC KYØ IMoân Toaùn Ñaïi Hình)Thôøi gian laøm baøi 90 phuùtÑieåm Nhaän xeùt cuûa GV:Moãi caâu ñeàu coù phaàn töï choïn neân caùc em chæ choïnMoãi caâu ñeàu coù phaàn töï choïn neân caùc em chæ choïnmoät phaàn ñeå laømmoät phaàn ñeå laømCaâu (1 ñieåm Choïn trong caâu sau 1A. Neâu quy taéc nhaân hai luõy thöøa cuøng soá muõ. Aùp duïng 2.2 ?1B Tæ leä thöùc laø gì Aùp duïng Vieát moät tyû leä thöùc ñöôïc suy ra töøñaúng thöùc 5.6 15.2Caâu (1 ñieåm Choïn trong caâu sau2A. Neâu noäi dung ñònh lyù veà toång goùc cuûa moät tam giaùc.Aùp duïng: Cho ABC thì 0ˆˆ50B C= .Tính soá ñoù cuûa µA 2B. Phaùt bieåu daáu hieäu nhaän bieát hai ñöôøng thaúng song song ?Caâu (2 ñieåm Choïn trong baøi tìm sau :a. 74 8x+ b. 9x+ c. x27 29 d. (-3) -243Caâu (2 ñieåm Choïn trong caâu sau4A. Cho hai ñöôøng thaúng vaø song song vôùi nhau.Moät ñöôøng thaúng caét taïi vaø caét taïi (nhö hình veõ).Bieát µ2130oC= Tính µ¶¶1 2, ,C ?4B. Cho haøm soá f(x) 2x .Tính f(1), f(-2), f( 12 ), f(0)Caâu (2 ñieåm Choïn trong caâu sau5A. Cho bieát 12 ngöôøi may xong moät loâ haøng heát ngaøy Hoûi ngöôøi thìmay heát loâ haøng ñoù trong bao nhieâu ngaøy Giaû söû naêng suaát laøm vieäccuûa moãi ngöôøi laø nhö nhau ).5B. Soá hoïc sinh gioûi khaù, trung bình cuûa lôùp 7A tæ leä vôùi caùc soá 1; 3;5. Tính soá hoïc sinh gioûi, khaù, trung bình cuûa lôùp 7A, bieát raèng soá hoïc sinh khaùít hôn soá hoïc sinh trung bình laø 10 hoïc sinh.Caâu (2 ñieåm Choïn trong caâu sau6A. Cho AOB coù OA OB, tia phaân giaùc cuûa goùc caét AB taïi D. Chöùngminh raèng :a. ODA ODB b. OD AB6B. Cho MPQ coù MP MQ vaø µµP Keû ME vuoâng goùc PQ taïi E. Chöùngminh raènga. MEP MEQ b. ME laø tia phaân giaùc cuûa goùc PMQ.Baøi laøm______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________