Matematika fanidan 8- sinf test savollari

Matematika fanidan 8- sinf test savollari
1. Quyidagi nuqtalardan qaysilari III chorakda joylashgan?

B (2;-3) C (-7;-6) N (-5;3) M (-1;-4) P(-2;-8)

A) B,M,P B) C,P,N C) C,M,P D) C,N,P
2. Quyidagi juftliklardan qaysilari o‘zaro tub sonlar? 1. (51,36) 2. (63,25) 3. (102,43)

A) 2 va 3 B) 1 va 3 C) faqat 2 D) faqat 1
3. Hisoblang:

A) 5 B) 3 C) 7 D) 11
4.Uchburchakning tomonlari 13 sm, 15 sm va 22 sm ga teng. Uchlari shu uchburchak tomonlari o‘rtalarida yotgan uchburchak perimetrini toping.

A) 25 B) 23 C) 24 D) 26
5. Agar a = , b = , bo’lsa, algebraik kasrning son qiymatini toping.
A) B) 12 C) D)
6. y=0,5x+6 chiziqli funksiya berilgan. Agar x= -21 bo’lsa y ning qiymatini toping.

A) 4,5 B) 16,5 C) -16 D) -4,5
7. Ifodani soddalashtiring: 5у – (4у – (3у – (2у +( у – 1)))).

A) 2y + 1 B) 3y – 1 C) y – 1 D) y + 1
8. Amallarni bajaring:

A) B) C) a² – ab D)
9. Parallelogrammning bir tomoni ikkinchisidan uch marta ortiq bo’lib, perimetri 20 sm ga teng. Uning tomonlarini aniqlang.

A) 2,5 sm va 8 sm B) 2,5 va 11,5 sm C) 2,5 sm va 7,5 sm D) 2,5 sm va 10 sm
10. Rombning burchaklaridan biri ikkinchisidan 20º kam bo’lsa, rombning barcha burchaklarini aniqlang.

A) 78°, 102°, 78°, 102°; B) 74°, 106°,74°,106° C) 72°, 108°,72°, 108°

D) 80°, 100°, 80°, 100°.
11. Uchta sexda 1800 ta ishchi ishlaydi. Вirinchi sexda ikkinchisiga qaraganda 1,2 marta ko’p, uchinchi sexda esa birinchisidan 100 ta ishchi ko’p. Uchinchi sexda nechta ishchi ishlaydi?

А) 400; B) 500; c) 600; d) 700.
12. Tomonlari teng bo’lgan parallelogram … deyiladi.

A) romb B) kvadrat C) to’g’ri to’rtburchak D) trapetsiya
13. Ko’phadni standart shaklga keltiring:

A) 4x²y – 3,75a²b B) 3x²y – 2a²b C) 3x²y + 10a²b D) 3x²y – 10a²b
14. Trapetsiyaning kichik asosi 4 sm, o’rta chizig’i katta asosidan 4 sm qisqa. Trapetsiyaning o’rta chizig’ini toping.

A) 6 sm B) 10 sm C) 9 sm D) 8 sm
15. Hisoblang: .

A) 1 B) 1,5 C) 2 D) 3,75
16. Ko’paytuvchilarga ajrating. 4(a-3)+a(a-3)=?

A) (a-3)(4-a) B) (a-3)(4+a) C) (4+a)(a+3) D) (4-a)(a+3)


17. Uchburchakning tomonlari 5 sm, 7 sm va 10 sm ga teng. Shu uchburchakning o’rta chiziqlarini toping.

A) 2,5sm ;3,5 sm;5 sm B) 3sm, 4 sm, 6 sm C) 2,5 sm, 5 sm, 4 sm D) 3 sm, 3,5 sm ,5 sm
18. Ikkita burchagining yig’indisi 120° teng bo’lgan parallelogrammning katta burchagini toping.

A) 110° B) 130° C) 150° D) 120°
19. Rombning diogonali tomoni bilan 30° burchak tashkil etadi. Rombning katta burchagini toping.

A) 120° B) 100° C) 140° D) 130°
20. Funksiya jadval orqali berilgan bo’lib, undagi qiymatlar orqali х va у o’zgaruvchilarni bog’lovchi formulani ko’rsating.

х	2	3	4	5
у	7	10	13	16

A) у = х + 5 С) у = х – 5 С) у = (х – 1) D) у = 3х + 1


21. Perimetri 44 ga teng bo’lgan uchburchakning bissektrisasi uni perimetrlari 36 va 24 bo’lgan uchburchaklarga ajratadi. Berilgan uchburchakning shu bissektrisasini toping.
22. Trapetsiyaning asoslaridan biri 25 dm, o’rta chizig’i esa 30 dm. Trapetsiyaning ikkinchi asosi uzunligini toping.




23. Agar a║b bo‘lsa, x = ?, y = ?

24. Ifodani soddalashtiring. 2/(a-1) + 3/(a+1) + (4a+5)/(a^2-1)

25. Amallarni bajaring.
26. Ifodani soddalashtiring. 5x/(x^2-1) + (6x-4)/(1-x^2)
27. x=3, y=4 bo‘lganda, 3(x-y)/(x+y)+3y^2/(x^2+2xy+y^2) ifodani qiymatini toping.
28. Tenglamalar sistemasini yeching. {
<sub>29. Soddalashtiring. (5a-3b)^2 – (6a–3b)^2
30. Tenglamani yeching. 24x–91= –5x+25</sub>