7-sinf matematika I variant

11.O’xshash hadlarni ixchamlang: 2y+3x-7y +6x+3x+10y-10x=?
A)2y-5x B)8xy C)15y+2x D)5y+2x
12.Ko’paytirishni bajaring: -2c(4b-3c)=?
A)-6c-8cb B)-8bc+6c² C)-8bc-6c² D)8bc+6c
13.Qo’shni burchaklardan biri ikkinchisidan 2 marta katta bo’lsa, shu burcahklarni toping?
A)60⁰; 120⁰ B) 70⁰; 110⁰ C) 50⁰; 100⁰ D) 90⁰; 180⁰
14. Algebraik kasrlarni qo’shish amali qaysi javobda to’g’ri keltirilgan?
A. 2ab+3ab=5a²b² B. 2ab+3ab=5ab C. 2ab+3ab=5(a+b) D. 2ab+3ab=6ab

15Ko’phadlarni ko’paytiring. (3x+2)(x-3)
A. 3x² + 2x - 6 B.3x² - 7x – 6 C. 3x² + x – 15 D. 3x² + 2x – 3

16. Hisoblang 2, 18 – ( 1, 45 – 4, 8 – 0, 25) =
A. 4,54 B. 8, 4 C. 5, 78 D.- 6,25

17. Onasi 48 yoshda, qizi esa 18 yoshda. Necha yil oldin qizi onasidan 3 marta yosh bo’lgan?
A. 6 B. 3 C. 5 D. 2

18. Teng yonli uchburchakning ikki tomoni 8 va 3 ga teng, uning uchinchi tomonini toping.
A. 6 B. 3 C. 8 D. 10

19. Birhadlarni ko’paytiring. ab3c · bcaa2=
Javob: __________________________

20. Ko’phadni standart shakliga keltiring.
3a2 b - 8b2 - 5a2b + 6b2 + 3a2b - 2c2
Javob: __________________________

21. Amalni bajaring. (12ab²-18a) : 4ab
Javob: __________________________

22. Algebraik ifodaning son qiymatini toping. 3x-2y², bunda x= -2, y=3
Javob: __________________________

23. AC va MN kesmalar O nuqtada kesishadi. O nuqta AC va MN kesmalarning o’rtasi va MC=9 m bo’lsa, AN kesmaning o’rtasini toping?
Javob: __________________________

24. Ikki qo’shni burchakning ayirmasi 40⁰ ga teng bo’lsa, ulardan kichigini toping. 
Javob: __________________________