Matematika. 7 sinf. Test savollari

Matematika. 7 sinf. Test savollari.

1. Teng yonli trapetsiyaning qarama -qarshi burchaklari ayirmasi 50⁰ ga teng ekani ma’lum bo`lsa, uning burchaklarini toping.

A) 115⁰, 115⁰, 65⁰, 65⁰ B) 130⁰, 130⁰, 80⁰, 80⁰ C) 125⁰, 125⁰, 75⁰, 75⁰ D) 120⁰, 120⁰, 70⁰, 70⁰
2. Rombning perimetri 36 sm bo`lsa, uning tomonini toping.
A) 6 sm B) 4 sm C) 9 sm D) 12 sm
3. Tog`ri to`rtburchakning eni 6 sm ga teng, bo`yi undan 3 sm ortiq bo`lsa, uning perimetrini toping.
A) 18 sm B) 30 sm C) 24 sm D) 21 sm
4. Perimetri 66 sm, bir tomoni ikkinchisidan ikki marta katta bo`lgan parallelogramm tomonlari uzunligini toping.
A) 9 sm, 9 sm, 18 sm, 18 sm B) 7 sm, 7sm, 14 sm, 14 sm C) 12 sm, 12 sm, 24 sm, 24 sm D) 11 sm, 11 sm, 22 sm, 22 sm
5. To`rtburchak barcha burchaklari yig`indisi nech gradusga teng ?
A) 180⁰ B) 270⁰ C) 360⁰ D) 540⁰
6. Agar uchburchakning ikkita burchagi 60⁰ va 40⁰ ga teng bo`lsa, uning noma’lum burchagini toping.
A) 100⁰ B) 20⁰ C) 80⁰ D) 120⁰
7. Agar uchburchakning burchaklari 2,3,4 sonlariga proporsional bo`lsa, ularni toping.
A) 40⁰, 60⁰, 80⁰ B) 20⁰, 30⁰, 40⁰ C) 30⁰, 45⁰, 60⁰ D) 80⁰, 120⁰, 160⁰
8. Oltiburchakda nechta diagonal bor ?
A) 6 ta B) 9 ta C) 18 ta D) 3 ta
9. Kasrlarning yig`indisini toping: .
A) B) C) D)
10. Kasrlarning ayirmasini toping: .
A) B) C) D) .
11. Kasrni qisqartiring: .
A) B) C) D)
12. Algebraik kasrning son qiymatini toping: , bunda a=16, b= -3.
A) 1,3 B) C) 1,6 D) 1,9
13. Surati p va q sonlarining ayirmasiga, maxraji esa ularning ko`paytmasiga teng bo`lgan algebraik kasrni yozing.
A) B) C) D)
14. Ko`paytuvchilarga ajrating: 16a² – 81.
A) (4a-3)(4a+3) B) (4a-9)(4a+9) C) (16a – 81)(16a +81) D) (4a – 9) ²
15. Ko`paytuvchilarga ajrating: 3a³ – 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 – 49 = 0.
A) 7 va -7 B) 49 va – 49 C) 7 D) -7
17. Hisoblang: 29,4² – 29,3².
A) 58,7 B) 5,87 C) 0, 587 D) 0,01
18. Soddalashtiring: (c-3)² – (c+3)(3-c)
A) -6c B) 2c² – 6c C) 2c² – 6c +18 D) 0
19) Ko`paytirishni bajaring: (x² + 1)(x -1)(x+1)
A) x⁴+1 B) x⁴ – 1 C) (x - 1)⁴ D) (x + 1)⁴
20. x ni shunday birhadga almashtiringki, natijada ikkihadning kvadrati hosil bo`lsin:
a² – 6ab + x
A) 9b² B) b² C) 36b² D) 3b
21. Hisoblang: 139∙15 + 18∙139 + 15∙261 + 18∙261.
A) 13200 B) 132400 C) 1320 D) 1324
22. Hisoblang: 26∙ − ∙23 .
A) 4 B) 3 C) D) 2
23. Hisoblang:
A) 3 B) C) 9 D)
24. Birhadning son qiymatini toping: , bunda a= -2, b= -1, c=10.
A) -8 B) 8 C) D) -
25. O`xshash hadlarni ixchamlang: 5a² – 4b² – 3a² + b² .
A) -6a²b² B) 2a²-3b² C) a²-2b² D) 6a²b².