Uy » Online olimpiada » Matematika olimpiada » 7-sinf Matematika olimpiada №1 Matematika olimpiada 7-sinf Matematika olimpiada №1 InfoMaster Aprel 29, 2022 2570 Ko'rishlar 1 izoh SaqlashSaqlanganOlib tashlandi 4 0 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. M ni shunday birhad bilan almashtiringki, natijada noma’lumning barcha qiymatlarida to`g`ri tenglik hosil bo`lsin: A) II B) IV C) I D) III 2 / 25 2. 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) 10 C) 15 D) 9 3 / 25 3. Soddalashtiring: 5b-(6b-a)-(a-6b) A) 17b-2a B) 5b+2a C) 5b-2a D) 5b 4 / 25 4. 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) 3,5 sm va 29,5 sm B) 30,5 sm C) 2,5 sm D) 2,5 sm va 30,5 sm 5 / 25 5. Uchburchakning ikki bissektrissasining kesishishidan hosil bo`lgan burchak 1280 ga teng. Uchburchakning uchinchi burchagini toping. A) 66 B) 67 C) 64 D) 65 6 / 25 6. Hisoblang: A) IV B) II C) I D) III 7 / 25 7. 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 8 / 25 8. Tenglamaning ildizi x0 bo’lsa, 18:x0 ifodaning son qiymatini toping. A) 7 B) 6 C) -7 D) 78/7 9 / 25 9. Ifodani soddalashtiring: 125a³-225a² b+135ab²-27b³ A) (5a)³-(3b)³ B) (5a-3b)³ C) (3a+5b)³ D) (3a-5b)³ 10 / 25 10. 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) 80°; 130° B) 105°; 105° C) 115°; 95° D) 110°; 100° 11 / 25 11. Tenglamani yeching: 8x+5=119+(7-3x) A) 11 B) 12 C) 1,2 D) 1,1 12 / 25 12. 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) 70° C) 80° D) 10° 13 / 25 13. Sonni standart ko`rinishda yozing: 1247800000 A) IV B) I C) III D) II 14 / 25 14. Gazlamaning narxi 20 Ma’lum vaqtdan so’ng, yangi narx ham 25 ortdi. Gazlamaning narxi jami necha foiz ortdi? A) 60 % B) 70 % C) 50 % D) 55 % 15 / 25 15. Agar qo`shni burchaklardan biri ikkinchisidan 450 katta bo`lsa,ularni toping . A) 113°;67° B) 111°30'; 68°30' C) 112°30'; 67°30' D) 135°;45° 16 / 25 16. Qo`shni burchaklar 1450 va 350 ga teng. Bu qo`shni burchaklar bissektrisalari tashkil qilgan burchakni toping. A) 86° B) 90° C) 80° D) 70° 17 / 25 17. 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 =16 sm; BC =12 sm; B) AB =12,5 sm; BC =15 sm; C) AB =15 sm; BC =12,5 sm; D) AB =12 sm; BC =16 sm; 18 / 25 18. Telefon stansiyasi mijozlarining uy telefon raqamlari 7 xonali sonlardan iborat va 573 sonidan boshlanadi. Shu stansiya nechta mijozga xizmat ko`rsatishi mumkin? A) 1000 B) 15000 C) 10000 D) 30000 19 / 25 19. Ifodaning qiymatini toping: A) 195 B) 25 C) 125 D) 15 20 / 25 20. 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) 30 sm C) 12 sm D) 24 sm 21 / 25 21. Tenglamani yeching. 4,5-1,6∙(5x-3)=1,2∙(4x-1)-15,1 A) 0 B) 2 C) 3 D) 1 22 / 25 22. Algebraik kasrni qisqartiring: A) II B) III C) I D) IV 23 / 25 23. Agar a=-8,3 bo`lsa, 0,6a+0,4∙(a-5,5) ifodaning qiymatini toping. A) – 1,05 B) – 10,5 C) 10,5 D) 1,05 24 / 25 24. Ko’paytuvchilarga ajrating: x⁴+x²+1 A) II B) I C) III D) IV 25 / 25 25. Ifodani soddalashtiring: A) 15x⁷y¹⁰ B) 15x⁵y⁶ C) 15x⁵y¹⁰ D) 15x⁶y¹⁰ 0% Testni qayta ishga tushiring Author: InfoMaster Foydali bo'lsa mamnunmiz
