7-sinf matematika

7-sinf matematika

1) Birhadlarni ko`paytiring 2a·3a

A) 6a B) 6a² C) 5a D) 5a²

2) Uchburchakning 1-tomoni 13, 2-tomoni 7. 3-tomoni a bo’lsa , u qaysi oraliqqa tegishli?

A) (13;15) B) (6;20) C) (7;13) D) [7;13]
3) Hisoblang:  ·77⁵
A)77 B) 77⁸ C) 77¹⁰ D)77⁷

4) Teng yonli uchburchakning asosi a , yon tomoni 2a marta ortiq. Uning perimetrini toping.

A) 4a B) a C) 5a D) a²

5 ko`phad shaklida yozing.

A) B) C) D)

6) kasrlarni umumiy mahrajga keltiring.

A) B) C) D)

7) Ko’paytuvchilarga ajrating :  -9

A) (x-3)(x+3) B) (x-1)(x-6) C) (x+1)(x-6) D) ajralmaydi

8) Ko’paytuvchilarga ajrating : 

A) a(a+12) B) ( )(a - 2) C) a(a-1)(a+2) D) (a+3)(a-2)

9) Kvadratlar ayirmasing formulasini yozing A) a²-b² =(a-b)(a-b) B) a²-b² =(a+b)(a-b) C) a²-b² =(a-b)(a²-b) D) a²-b² =(a-2b)(a-b)

10) a= 12,1; b=11,1 bo`lsa, a²-2ab+b² ifodaning qiymatini toping .

А) 1 B) 0.004 C) 6 D) 56

11) To’g’ri to’rturchakni eni 3 sm , bo’yi esa enidan 2 marta ko`p . To’g’ri to’rtburchakni yuzini toping.

1. 
   6 B) 12 C) 18 D) 24
   

12) O’tinni 3ga bo’lish uchun 10 minut ketadi. O’tinni 6 ga bo’lish uchun qancha vaqt kerak?
A) 25min B) 20min C) 6min D) 60min

13) Tenglamani yeching : (x+3)+10=10

A) -3 B) 3 C) 0 D) 10

14) Uchburchakning 7 ga teng balandligi uni perimetrlari 13 va 18 ga teng uchburchaklarga ajratadi. Berilgan uchburchakning perimetrini toping.

A) 17 B) 14 C) 24 D) 10
15) Qo’shni burchaklar 7:13 nisbatda bo’lsa. Katta burchakni toping.
A) 117 B) 63 C) 110 D) 70

16) Agar uchburchak burchaklari 2:3:4 kabi nisbatda bo`lsa uning burchaklarini toping

A) 20˚,30˚,40 B)40˚,60˚,80˚ C)36˚,54˚,90˚ 2 D) 18˚,27˚,36˚

17) Agar P=5a+2, Q=5a-2 bo’lsa P-Q ni hisoblang.

A) 0 B) 4 C) 2 D) 10a

18) Ko’paytiring: (x-1)(x+1)

A) x-1 B)x+1 C)x² -1 D)x²

19) Ikkita to`g`ri burchakli uchburchakning gipotenuzasi va ……… teng bo`lsa , bu uchburchaklar teng bo`ladi.

20) Uchburchak ……..180˚ ga teng?

21) Uchburchak medianasi uchburchak tomoni bilan teng burchaklar tashkil qilgan. Bu qanday uchburchak?

22) (a+b)³ ifoada ko’phad shaklida tasvirlangandai koeffitsientlar yig’indisini toping.

23) Tomonlari 12 16 20 bo`lgan uchburchak mavjudmi?

24) Qo’shni burchaklar bissektrisalari orasidagi burchak necha gradus?


25) Agar uchburchak burchaklari 3:2:1 kabi nisbatda bo`lsa ularning turini aniqlang?