8-sinf algebra I chorak sinovi №

8-sinf algebra I chorak sinovi №

1. 
   Ushbu ifoda n ning nechta natural qiymatida natural son bo'ladi? A)6 B)3 C)5 D)4
   
2. 
   Maktab kutubxonasida 40000 ta kitob bor. Ularning 2% i matematikaga oid kitoblardir. Kutubxonada matematikaga oid nechta kitob bor? A) 400 B) 200 C) 800 D) 1000
   
3. 
   Ikki sonning yig’indisi 460 ga teng .Ularning biri ikkinchisidan 150ta ortiq .Shu sonlarni toping. A) 132 va 328 B)160 va 300 C) 155 va 305 D)215 va 245
   
4. 
   Agar kamayuvchini 30 orttirilib ta va ayriluvchini 12 ta kamaytirilsa, ayirma qanday o‘zgaradi? A) 18 ta kamayadi B) 24 ta ortadi C) 12 ta ortadi D) 12 ta kamayadi
   
5. 
   n raqamining qanday qiymatlarida 7851n soni 9ga qoldiqsiz bo'linadi?A)2 B)4 C)6 D)9
   
6. 
   90 va 300 sonlarining eng kichik umumiy karralisini toping. A) 80 B) 10 C) 18 D) 900
   
7. 
   Qaysi tengliklar qoldiqli bo'lishni ifodalaydi?
   1)45= 2 ∙ 23 − 1 2)45=8∙6−3 3)45=7∙6+3 4)45=11∙4+1
   

A) 1; 2; 4 B) 2; 3; 4 C) 2; 4 D) 3; 4

8. 
   Quyidagi ifodalardan qaysi biri 1ga teng?A)(−(−1)²)³ B)((−1)³)⁵ С)−((−1)⁵)⁴ D)((−1)³)⁴
   
9. 
   0, 8 songa teskari sonni toping. A) -0, 8 B) 8 C) D) 1, 25
   
10. 
    −8 + 6 : (−2) − 2 ∙ (−11) ni hisoblang. A)23 B)11 C)−11 D)−10
    
11. 
    Yig’indini hisoblang: A) B) C) D)
    
12. 
    Hisoblang. 19,9·18−19,9·16+30,1·18−30,1·16 A) 98 B) 100 C) 10 D)110
    
13. 
    Hisoblang.
    
14. 
    Hisoblang.
    
15. 
    sonlarini o’sish tartibida yo’zing. A) B)b
    5 · 5 · 5² · 5⁵ ni 5 ning darajasi shaklida yozing. A) 5⁷ B) 5⁸ C) 5⁹ D) 5⁶
    
16. 
    Hisoblang.
    
17. 
    3ab²·2a³b⁵ birhadni standart shaklga keltiring. A)6ab²·a³b⁵ B)6a³b¹⁰ C)6a⁴b⁷ D)6a³b⁷
    
18. 
    2x(3x−4)−3x(2x+1)+11x ifodani soddalashtiring. A)0. B) 22x. C) 6x²+22x. D) 6x+12.
    
19. 
    Ko’paytuvchilarga ajrating . A) ; B) ; C) ; D) .
    
20. 
    Tenglamani yeching . A) -2; B) 0,5; C) 1,6; D) ildizi yo’q.
    
21. 
    Ko’phadlarni ko’paytiring . A) ; B) ; C) ; D) .
    
22. 
    Bo’lishni bajaring . A) ; B) ; C) ; D) .
    
23. 
    Tenglamani yeching . A) 2; B) 3; C) 4; D) 6.
    
24. 
    Ko'paytuvchilarga ajrating.(x²+9)²−36x² A) (x²−5)(x²+4) B) (x−3)²·(x+3)² C) (x−6)²·(x+6)² D) x²(x²−6)