7-sinf Matematika olimpiada №1 Aprel 29, 2022Aprel 29, 2022 da chop etilgan InfoMaster tomonidan 7-sinf Matematika olimpiada №1 ga 1 fikr bildirilgan 1 12345678910111213141516171819202122232425 Vaqtingiz tugadi! Tomonidan yaratilgan InfoMaster 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. 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) 1000 C) 10000 D) 15000 2 / 25 2. Hisoblang: A) III B) IV C) II D) I 3 / 25 3. 1, 2, 3, 4, 5, 6 va 7 raqamlaridan, ularni takrorlamasdan nechta 4 xonali son tuzish mumkin? A) 35 ta B) 36 ta C) 34 ta D) 33 ta 4 / 25 4. 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) 75/8 B) 1/8 C) 9 D) 81/8 5 / 25 5. Tenglamani yeching. 4,5-1,6∙(5x-3)=1,2∙(4x-1)-15,1 A) 1 B) 3 C) 2 D) 0 6 / 25 6. 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) 2,5 sm C) 30,5 sm D) 2,5 sm va 30,5 sm 7 / 25 7. 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) 70° B) 75° C) 80° D) 10° 8 / 25 8. Uchburchakning ikki bissektrissasining kesishishidan hosil bo`lgan burchak 1280 ga teng. Uchburchakning uchinchi burchagini toping. A) 65 B) 67 C) 66 D) 64 9 / 25 9. O’lchovlari 8 va 20 ga teng bo’lgan to’g’ri to’rt burchaklardan eng kamida nechtasini birlashtirib, kvadrat hosil qilish mumkin? A) 10 B) 9 C) 15 D) 11 10 / 25 10. Gazlamaning narxi 20 Ma’lum vaqtdan so’ng, yangi narx ham 25 ortdi. Gazlamaning narxi jami necha foiz ortdi? A) 50 % B) 70 % C) 55 % D) 60 % 11 / 25 11. Ifodani soddalashtiring: A) 15x⁵y⁶ B) 15x⁷y¹⁰ C) 15x⁵y¹⁰ D) 15x⁶y¹⁰ 12 / 25 12. Tenglamaning ildizi x0 bo’lsa, 18:x0 ifodaning son qiymatini toping. A) 78/7 B) 7 C) 6 D) -7 13 / 25 13. Agar a=-8,3 bo`lsa, 0,6a+0,4∙(a-5,5) ifodaning qiymatini toping. A) 10,5 B) – 1,05 C) 1,05 D) – 10,5 14 / 25 14. Agar qo`shni burchaklardan biri ikkinchisidan 450 katta bo`lsa,ularni toping . A) 112°30'; 67°30' B) 113°;67° C) 135°;45° D) 111°30'; 68°30' 15 / 25 15. Soddalashtiring: 5b-(6b-a)-(a-6b) A) 5b+2a B) 5b-2a C) 17b-2a D) 5b 16 / 25 16. Algebraik kasrni qisqartiring: A) II B) I C) III D) IV 17 / 25 17. Sonni standart ko`rinishda yozing: 1247800000 A) IV B) III C) I D) II 18 / 25 18. Ifodani soddalashtiring: 125a³-225a² b+135ab²-27b³ A) (3a+5b)³ B) (5a)³-(3b)³ C) (3a-5b)³ D) (5a-3b)³ 19 / 25 19. Ifodaning qiymatini toping: A) 25 B) 15 C) 195 D) 125 20 / 25 20. Uchburchakning ikkita uchidagi tashqi burchaklari o`zaro teng va perimetri 74 sm, uning bir tomoni 16 sm ga teng. Ikkita qolgan tomonlarini toping. A) 27, 32 B) 29, 29 C) 31, 29 D) 29, 30 21 / 25 21. Tenglamani yeching: 8x+5=119+(7-3x) A) 11 B) 12 C) 1,1 D) 1,2 22 / 25 22. 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) 105°; 105° C) 110°; 100° D) 80°; 130° 23 / 25 23. Bir ishni 10 kishi 8 kunda bajara oladi. 2 kundan so`ng, uchinchi kuni ularga yordam berish uchun bir necha kishi qo`shildi va qolgan ishni 4 kunda bajarishdi. Necha kishi kelib qo`shilgan? A) 5 B) 4 C) 3 D) 6 24 / 25 24. Qo`shni burchaklar 1450 va 350 ga teng. Bu qo`shni burchaklar bissektrisalari tashkil qilgan burchakni toping. A) 70° B) 86° C) 80° D) 90° 25 / 25 25. Ko’paytuvchilarga ajrating: x⁴+x²+1 A) II B) IV C) III D) I 0% Testni qayta ishga tushiring tomonidan Wordpress Quiz plugin Matematika olimpiada
