Matematika

7 sinf o`quvchisi: ______________________________

Matematika. 7 sinf. Test savollari.
1. Teng yonli to`g`ri burchakli uchburchakning gipotenuzasiga tushirilgan balandlik 4 sm ga teng. Uning gipotenuzasini toping.

A) 4 sm B) 8 sm C) 16 sm D) 12 sm

2. Tog`ri burchakli uchburchak gipotenuzasi 24 sm ga teng bo`lsa, uning 30⁰ li burchak qarshisida yotgan kateti uzunligini toping.

A) 6 sm B) 15 sm C) 9 sm D) 12 sm

3.Uchburchakning burchaklari 30⁰, 70⁰, 80⁰. Uning eng kichik tashqi burchagini toping ?.

A) 80⁰ B) 100⁰ C) 110⁰ D) 150⁰

4. Uchburchak ikkita tashqi burchaklari 120⁰, 110⁰ bo`lsa, uning uchinchi tashqi burchagi necha gradusga teng ?.

A) 180⁰ B) 130⁰ C) 120⁰ D) 50⁰

5. 60⁰ li burchakning burchak uchidan uning bissektrisasining biror nuqtasigacha bo`lgan masofa 29 sm bo`lsa, Shu nuqtadan burchak tomonlarigacha bo`lgan masofani toping ?

A) 20, 5 sm; 20,5 sm B) 14, 5 sm; 14,5 sm C) 16,5 sm; 24,5 sm D) 20 sm va 9 sm

6. Agar uchburchakning ikkita burchagi 50⁰ va 10⁰ ga teng bo`lsa, uning noma’lum burchagini toping.

A) 70⁰ B) 110⁰ C) 80⁰ D) 120⁰

7. Agar uchburchakning burchaklari 2,3,4 sonlariga proporsional bo`lsa, ularni toping.

A) 40⁰, 60⁰, 80⁰ B) 30⁰, 40⁰, 50⁰ C) 30⁰, 45⁰, 60⁰ D) 45⁰, 60⁰, 75⁰

8. Teng yonli uchburchakning bir burchagi 140⁰ bo`lsa, uning eng katta tashqi burchagini toping ?

A) 120⁰ B) 140⁰ C) 150⁰ D) 160⁰

9. Ifodani qisqa ko`paytirish formulalaridan foydalanib, ikkihad shaklida yozing: (x - 3)(x² + 3x + 9).

A) x³ + 9 B) x³ - 9 C) x³ + 27 D) x³ - 27

10. Ko`paytuvchilarga ajrating: a³ + 64.

A) (a + 4)(a² - 4a +16) B) (a + 4)(a² + 4a + 16) C) (a - 4)(a² + 4a + 16) D) (a + 2)(a² + 8)

11. Kasrni qisqartiring: .

A) B) C) D)

12. Algebraik kasrning son qiymatini toping: , bunda a = 16, b= -3.

A) B) 99 C) 93 D) 49,5

13. Surati p va q sonlarining yig`indisiga, maxraji esa ularning ko`paytmasiga teng bo`lgan algebraik kasrni yozing.

A) B) C) D)

14. Ko`paytuvchilarga ajrating: 16a² + 72a + 81.

A) (4a + 9)² B) (4a-9)(4a+9) C) (16a – 81)(16a +81) D) (4a – 9) ²

15. Ko`paytuvchilarga ajrating: 3a² - 3.

A) 3 (a-1)(a² + a + 1) B) 3 (a-1)(a+1) C) 3 (a +1)(a² - a + 1) D) 3 (a + 1)(a² - a - 1)

16. Tenglamaning ildizlarini toping: x² – 256 = 0.

A) 16 va -1 B) 16 va – 16 C) 16 D) -16

17. Hisoblang: 29,7² – 19,7 ².

A) 100 B) 48, 4 C) 49, 4 D) 494

18. Soddalashtiring: (c - 3)² – (c + 3)².+ 6c.

A) -6c B) 2c² – 6c C) 2c² – 6c +18 D) -12c

19) Ko`paytirishni bajaring: (x² + 1)(x -1)(x+1)

A) x⁴+1 B) x⁴ – 1 C) x⁴ – 2x² + 1 D) x⁴ + 2x² + 1

20. x ni shunday birhadga almashtiringki, natijada ikkihadning kvadrati hosil bo`lsin:

a² – 4ab + x

A) 9b² B) b² C) 4b² D) 2b²

21. Hisoblang: 239∙12 + 13∙239 + 13∙761 + 12∙761.

A) 21600 B) 10000 C) 13200 D) 25000

22. Hisoblang: 17∙ − ∙14 .

A) 4 B) 2 C) D) 8

23. Kasrlarning umumiy maxrajini toping:

A) 648abcd B) 24abcd C) 24ab²cd D) 648ab²cd

24. kasrlarning umumiy maxrajini toping.

A) 444 B) 592 C) 259 D) 37

25. O`xshash hadlarni ixchamlang: 8a² + 4b² + 3a² - 7b² .

A) 11a² - 3 b² B) 12a² - 4b² C) 12a² + 3b² D) 8a²b².

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Jami test: 25. To`g`ri: _____ O`zlashtirish: ____.