Matematika 8 sinf uchun test savollari I variant

Matematika

8 sinf uchun test savollari

I variant

1. 
   ni soddalashtiring.
   

A) B) C) D)

2. 
   Hisoblang.
   

A) B) C) D)

3. 
   Hisoblang:
   

A) 4,4 B) C) D)

4. 
   ekanligi ma’lum bo`lsa, kasrning qiymatini toping.
   

A) 3,6 B) C) 3,8 D) 3,2

5. 
   ABCD teng yonli trapetsiyaning diagonallari o`zaro perpendikulyar. Agar AC diagonal 6 sm ga teng bo`lsa, uning yuzini toping.
   

A)9 sm² B)36 sm² C)18sm² D)27 sm²

6. 
   Taqqoslang: va
   

A) B) C) D)

7. 
   Hisoblang:
   

A) 280 B) 27 C) 260 D) 270

8. 
   Ikki doira yuzlarining nisbati ga teng, kichik doiraning radiusi 4 sm. Katta doiraning radiusini toping.
   

A) 24 B) 14 C) 16 D) 12

9. 
   Ikki sonning ko`paytmasi ularning o`rta arifmetigiga teng bo`lib, bu sonlar ayirmasi esa 1ga teng. Berilgan sonlarni toping.
   

A) B) C) (2; 1) D)

10. 
    Ifodani soddalashtiring: , bunda .
    

A) B) C) D)

11. 
    BP ABCD parallelogrammning balandligi. Agar AB=13 sm, AD=16 sm va ABCD ni toping.
    

A) 100 B) 104 C) 52 D)105

12. 
    Tenglamani yeching:
    

A) B) C) D)

13. 
    Soddalashtiring:
    

A) 0 B) C) D)

14. 
    Muntazam uchburchakning balandligi 9 sm. Uchburchakka ichki chizilgan aylananing radiusini toping.
    

A) 3 sm B) 4,5 sm C) 6 sm D) 2,5 sm

15. 
    Tengsisliklar sistemasini yeching .
    

A)[-3;5) B)(2;4] C)[-6;6) D)[6; )

16. 
    Agar va bo`lsa, vektorning modulini toping.
    

A) 16 B) 10 C) 8 D) 3

17. 
    Tomonlari 4; 13 va 15 ga teng bo`lgan uchburchakning yuzini toping.
    

A) B) C) D)

18. 
    Trapetsiyaning o`rta chizig`i 9 sm, asoslaridan biri ikkinchisidan 6 sm kichik. Trapetsiyaning katta asosini toping.
    

A) 15sm B) 18 sm C) 12 sm D) 14 sm

19. 
    f(-2)=3 va f(2)=5 shartni qanoatlantiruvchi chiziqli funksiyani aniqlang.
    

A) B)f(x)=2x-1 C) f(x)=2x+1 D) f(x)=3x+9

20. 
    Agar
    

bo`lsa, x(y+7) ning qiymatini toping.

A)16 B)18 C)20 D)14

21. 
    A1 nuqta OX o`qiga nisbatan nuqtaga simmetrik, A2 nuqta OY o`qiga nisbatan A1 nuqtaga simmetrik bo`lsa, A2 nuqtaning koordinatalarini toping.
    
22. 
    Teng yonli to`g`ri burchakli uchburchakning yuzi 1225 ga teng bo`lsa, uchburchakning gipotenuzasini toping.
    
23. 
    Aylanani 3:5 nisbatda bo`luvchi vatar va shu vatarning oxirlarining biridan o`tuvchi diametr orasidagi burchakni toping.
    
24. 
    0,00010258 sonini standart shaklda yozing.
    
25. 
    Agar ekanligi ma’lum bo`lsa, ni toping.
    
26. 
    Kater va teploxod bir-biriga qarab harakatlanishmoqda. Ular orasidagi masofa 120 km. Teploxodning tezligi 50 km/soat. Katerning tezligi teploxodning tezligidan 60% ga kam. Ular necha soatdan keyin uchrashadilar.
    
27. 
    Taqqoslang:
    
28. 
    Agar ekanligi ma`lum bo`lsa, ni toping.
    

______________________________________________________

29. 
    Hisoblang:
    

_{____________________________________________________________}

30. 
    Tenglamaning ildizlari yeg`indisini hisoblang:
    

_{____________________________________________________________}