Uy » Online olimpiada » Matematika olimpiada » 7-sinf Matematika olimpiada №1 Matematika olimpiada 7-sinf Matematika olimpiada №1 InfoMaster Aprel 29, 2022 395 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 1 5 12345678910111213141516171819202122232425 Vaqtingiz tugadi! 7-sinflar Matematika olimpiada №1 2019-yil bilimlar bellashuvida tushgan savollar Ismi familiyangizni kriting! Iltimos ma'lumotlaringizni to'g'ri kritishga e'tibor bering! 1 / 25 1. Uchburchakning ikkita uchidagi tashqi burchaklari o`zaro teng va perimetri 74 sm, uning bir tomoni 16 sm ga teng. Ikkita qolgan tomonlarini toping. A) 29, 30 B) 29, 29 C) 27, 32 D) 31, 29 2 / 25 2. A, B va C nuqtalar bir to`g`ri chiziqda yotadi. Agar AB=14 sm, BC=16,5 sm bo`lsa, AC ni toping. A) 2,5 sm B) 30,5 sm C) 3,5 sm va 29,5 sm D) 2,5 sm va 30,5 sm 3 / 25 3. To`g`ri burchakli uchburchakning gipotenuzasiga tushirilgan medianasi 8 sm. Uchburchakning burchaklaridan biri 600 bo`lsa, bu burchakka yopishgan tomonlarini toping (sm). A) 9 B) 7 C) 5 D) 8 4 / 25 4. Hisoblang: A) I B) II C) IV D) III 5 / 25 5. Sonni standart ko`rinishda yozing: 1247800000 A) III B) II C) I D) IV 6 / 25 6. ABC uchburchakning AD medianasi BC tomondan keyin DE= AD bo`lgan kesmaga davom ettirilib, E nuqta B nuqta bilan tutashtirildi.Agar ∠ACD=450, ∠ABD=350 bo`lsa, ∠ABE ni toping. A) 75° B) 80° C) 70° D) 10° 7 / 25 7. Ifodani soddalashtiring: 125a³-225a² b+135ab²-27b³ A) (5a)³-(3b)³ B) (5a-3b)³ C) (3a+5b)³ D) (3a-5b)³ 8 / 25 8. Gazlamaning narxi 20 Ma’lum vaqtdan so’ng, yangi narx ham 25 ortdi. Gazlamaning narxi jami necha foiz ortdi? A) 50 % B) 60 % C) 55 % D) 70 % 9 / 25 9. Agar a=-8,3 bo`lsa, 0,6a+0,4∙(a-5,5) ifodaning qiymatini toping. A) 10,5 B) – 10,5 C) 1,05 D) – 1,05 10 / 25 10. Ifodaning qiymatini toping: A) 25 B) 15 C) 195 D) 125 11 / 25 11. Telefon stansiyasi mijozlarining uy telefon raqamlari 7 xonali sonlardan iborat va 573 sonidan boshlanadi. Shu stansiya nechta mijozga xizmat ko`rsatishi mumkin? A) 30000 B) 15000 C) 1000 D) 10000 12 / 25 12. Asosi BC bo`lgan teng yonli ABC uchburchakning perimetri 40 sm va teng tomonli BCD uchburchakning perimetri 45 sm ga teng. AB va BC tomonlarni toping. A) AB =12 sm; BC =16 sm; B) AB =12,5 sm; BC =15 sm; C) AB =15 sm; BC =12,5 sm; D) AB =16 sm; BC =12 sm; 13 / 25 13. Tenglamani yeching. 4,5-1,6∙(5x-3)=1,2∙(4x-1)-15,1 A) 1 B) 2 C) 3 D) 0 14 / 25 14. Ifodani ko`paytuvchilarga ajrating: 9b²-(a-3b)² A) 18b²-a²+6ab B) (6b-a)(6b+a) C) (6b-a)a D) a² 15 / 25 15. Algebraik kasrni qisqartiring: A) II B) IV C) I D) III 16 / 25 16. Ko’paytuvchilarga ajrating: x⁴+x²+1 A) I B) III C) IV D) II 17 / 25 17. To`g`ri burchakli parallelepipedning asosi tomoni c sm ga teng bo`lgan kvadratdan iborat bo`lib,balandligi d Bu parallelepipeddan qirrasi c sm bo`lgan kub qirqib olindi. Qolgan qismining hajmi V (sm3)ni hisoblash formulasini tuzing. Agar c=2,5 sm, d=4 sm bo`lsa, V ni toping. A) 9 B) 81/8 C) 1/8 D) 75/8 18 / 25 18. Uchburchakning ikki bissektrissasining kesishishidan hosil bo`lgan burchak 1280 ga teng. Uchburchakning uchinchi burchagini toping. A) 66 B) 67 C) 64 D) 65 19 / 25 19. Soddalashtiring: 5b-(6b-a)-(a-6b) A) 17b-2a B) 5b C) 5b-2a D) 5b+2a 20 / 25 20. O’lchovlari 8 va 20 ga teng bo’lgan to’g’ri to’rt burchaklardan eng kamida nechtasini birlashtirib, kvadrat hosil qilish mumkin? A) 11 B) 15 C) 10 D) 9 21 / 25 21. Umumiy AB asosga ega bo`lgan ACB va ADB uchburchaklar berilgan. CD va AB lar O nuqtada kesishadi. Agar ∠DAB= ∠CBA, ∠CAB= ∠DBA, DB=24 sm bo`lsa, CA ni toping. A) 48 sm B) 24 sm C) 12 sm D) 30 sm 22 / 25 22. Ifodani soddalashtiring: A) 15x⁵y¹⁰ B) 15x⁵y⁶ C) 15x⁶y¹⁰ D) 15x⁷y¹⁰ 23 / 25 23. 1, 2, 3, 4, 5, 6 va 7 raqamlaridan, ularni takrorlamasdan nechta 4 xonali son tuzish mumkin? A) 34 ta B) 33 ta C) 35 ta D) 36 ta 24 / 25 24. Ikkita parallel to`g`ri chiziqlarni to`g`ri chiziq bilan kesishishidan hosil bo`lgan mos burchaklarning yig`indisi 2100 ga teng.Bu burchaklarni toping. A) 115°; 95° B) 80°; 130° C) 110°; 100° D) 105°; 105° 25 / 25 25. Tenglamani yeching: 8x+5=119+(7-3x) A) 1,2 B) 11 C) 1,1 D) 12 0% Testni qayta ishga tushiring Tomonidan Wordpress Quiz plugin Author: InfoMaster Foydali bo'lsa mamnunmiz