Matematika



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Matematika-7-sinf-chiqish-test-3


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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