Barcha fanlardan online testlar

7-sinf Matematika olimpiada №1

InfoMaster

Aprel 29, 2022

2483 Ko'rishlar 1 izoh

SaqlashSaqlanganOlib tashlandi 4

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. Tenglamaning ildizi x₀bo’lsa, 18:x₀ ifodaning son qiymatini toping.

A) -7

B) 6

C) 78/7

D) 7

2 / 25

2. Sonni standart ko`rinishda yozing: 1247800000

A) II

B) I

C) IV

D) III

3 / 25

3. 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) 80°; 130°

C) 105°; 105°

D) 115°; 95°

4 / 25

4. Gazlamaning narxi 20 Ma’lum vaqtdan so’ng, yangi narx ham 25 ortdi. Gazlamaning narxi jami necha foiz ortdi?

A) 60 %

B) 50 %

C) 55 %

D) 70 %

5 / 25

5. 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 =15 sm; BC =12,5 sm;

B) AB =12 sm; BC =16 sm;

C) AB =16 sm; BC =12 sm;

D) AB =12,5 sm; BC =15 sm;

6 / 25

6. Soddalashtiring: 5b-(6b-a)-(a-6b)

A) 5b

B) 5b+2a

C) 5b-2a

D) 17b-2a

7 / 25

7. 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

8 / 25

8. Ifodaning qiymatini toping:

A) 195

B) 25

C) 125

D) 15

9 / 25

9. Agar qo`shni burchaklardan biri ikkinchisidan 45⁰katta bo`lsa,ularni toping .

A) 113°;67°

B) 112°30'; 67°30'

C) 135°;45°

D) 111°30'; 68°30'

10 / 25

10. 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) 80°

B) 10°

C) 75°

D) 70°

11 / 25

11. Ifodani ko`paytuvchilarga ajrating: 9b²-(a-3b)²

A) a²

B) (6b-a)a

C) (6b-a)(6b+a)

D) 18b²-a²+6ab

12 / 25

12. 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

13 / 25

13. 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

14 / 25

14. Algebraik kasrni qisqartiring:

A) I

B) III

C) IV

D) II

15 / 25

15. Tenglamani yeching. 4,5-1,6∙(5x-3)=1,2∙(4x-1)-15,1

A) 2

B) 3

C) 0

D) 1

16 / 25

16. Ifodani soddalashtiring: 125a³-225a² b+135ab²-27b³

A) (3a-5b)³

B) (5a-3b)³

C) (3a+5b)³

D) (5a)³-(3b)³

17 / 25

17. 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) 11

D) 15

18 / 25

18. 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) 12 sm

B) 48 sm

C) 30 sm

D) 24 sm

19 / 25

19. Hisoblang:

A) I

B) II

C) III

D) IV

20 / 25

20. Ko’paytuvchilarga ajrating: x⁴+x²+1

A) III

B) II

C) IV

D) I

21 / 25

21. Tenglamani yeching: 8x+5=119+(7-3x)

A) 11

B) 1,2

C) 12

D) 1,1

22 / 25

22. 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

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) 3

B) 4

C) 5

D) 6

24 / 25

24. Uchburchakning ikki bissektrissasining kesishishidan hosil bo`lgan burchak 128⁰ ga teng. Uchburchakning uchinchi burchagini toping.

A) 65

B) 64

C) 67

D) 66

25 / 25

25. A, B va C nuqtalar bir to`g`ri chiziqda yotadi. Agar AB=14 sm, BC=16,5 sm bo`lsa, AC ni toping.