Uy » Online olimpiada » Matematika olimpiada » 7-sinf Matematika olimpiada №1 Matematika olimpiada 7-sinf Matematika olimpiada №1 InfoMaster Aprel 29, 2022 2451 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. Tenglamani yeching: 8x+5=119+(7-3x) A) 11 B) 1,1 C) 1,2 D) 12 2 / 25 2. 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) 30 sm B) 48 sm C) 24 sm D) 12 sm 3 / 25 3. Tenglamani yeching. 4,5-1,6∙(5x-3)=1,2∙(4x-1)-15,1 A) 2 B) 3 C) 1 D) 0 4 / 25 4. 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 sm; BC =16 sm; C) AB =12,5 sm; BC =15 sm; D) AB =15 sm; BC =12,5 sm; 5 / 25 5. Ko’paytuvchilarga ajrating: x⁴+x²+1 A) I B) III C) II D) IV 6 / 25 6. 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, 29 B) 27, 32 C) 31, 29 D) 29, 30 7 / 25 7. Hisoblang: A) IV B) I C) III D) II 8 / 25 8. 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) 81/8 B) 75/8 C) 9 D) 1/8 9 / 25 9. Gazlamaning narxi 20 Ma’lum vaqtdan so’ng, yangi narx ham 25 ortdi. Gazlamaning narxi jami necha foiz ortdi? A) 70 % B) 60 % C) 50 % D) 55 % 10 / 25 10. 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) 9 D) 10 11 / 25 11. Agar a=-8,3 bo`lsa, 0,6a+0,4∙(a-5,5) ifodaning qiymatini toping. A) – 1,05 B) 1,05 C) – 10,5 D) 10,5 12 / 25 12. Tenglamaning ildizi x0 bo’lsa, 18:x0 ifodaning son qiymatini toping. A) 6 B) 78/7 C) 7 D) -7 13 / 25 13. Agar qo`shni burchaklardan biri ikkinchisidan 450 katta bo`lsa,ularni toping . A) 135°;45° B) 113°;67° C) 112°30'; 67°30' D) 111°30'; 68°30' 14 / 25 14. 1, 2, 3, 4, 5, 6 va 7 raqamlaridan, ularni takrorlamasdan nechta 4 xonali son tuzish mumkin? A) 36 ta B) 34 ta C) 35 ta D) 33 ta 15 / 25 15. Sonni standart ko`rinishda yozing: 1247800000 A) IV B) I C) II D) III 16 / 25 16. Uchburchakning ikki bissektrissasining kesishishidan hosil bo`lgan burchak 1280 ga teng. Uchburchakning uchinchi burchagini toping. A) 64 B) 65 C) 66 D) 67 17 / 25 17. Ifodani ko`paytuvchilarga ajrating: 9b²-(a-3b)² A) (6b-a)a B) a² C) (6b-a)(6b+a) D) 18b²-a²+6ab 18 / 25 18. Ifodaning qiymatini toping: A) 15 B) 25 C) 125 D) 195 19 / 25 19. Ifodani soddalashtiring: 125a³-225a² b+135ab²-27b³ A) (5a)³-(3b)³ B) (5a-3b)³ C) (3a+5b)³ D) (3a-5b)³ 20 / 25 20. M ni shunday birhad bilan almashtiringki, natijada noma’lumning barcha qiymatlarida to`g`ri tenglik hosil bo`lsin: A) IV B) III C) II D) I 21 / 25 21. 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) 110°; 100° B) 115°; 95° C) 80°; 130° D) 105°; 105° 22 / 25 22. 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) 4 B) 3 C) 6 D) 5 23 / 25 23. Algebraik kasrni qisqartiring: A) II B) III C) I D) IV 24 / 25 24. 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 25 / 25 25. Qo`shni burchaklar 1450 va 350 ga teng. Bu qo`shni burchaklar bissektrisalari tashkil qilgan burchakni toping. A) 80° B) 90° C) 70° D) 86° 0% Testni qayta ishga tushiring Author: InfoMaster Foydali bo'lsa mamnunmiz
