9−sinf olimpiada I−variant

9-sinf

4-variant

1.Kasrni qisqartiring:

A) B) C)
D)

2. Agar ikki shahar orasidagi masofa 1:3000000 mashtabli xaritada 4,5cm ga teng bo‘lsa , huddi shu masofa 1:2000000 mashtabli xaritada necha (cm) ga teng bo‘ladi?

A) 6,75 B) 67,5 C) 3 D) 0,3

3. Agar bo‘lsa b ni qiymatini toping

A) B) C) D) 12

4. а soni sonining 25% ini tashkil etadi. с soni esa sonining 40% ini tashkil etadi. с soni a sonining qancha foizini tashkil etadi? 1.Tenglamani yeching:

A) -2 B) 2 C) -3 D) 3

5. 60 km\soat tezlik bilan ketayotgan poyezddagi yo‘lovchi oynadan qarama qarshi yo’nalishdan kelayotgan poyezdni 4 sekundda o’tib ketganini kuzatdi.Agar qarama qarshi kelayotgan poyezdning uzunligi 120 m bo‘lsa, uning tezligini toping.

A) 55 B) 50 C) 40 D) 48

6.Ifodani soddalashtiring :

А) 1 В) -1 С ) D)

8.To‘rtburchakning uchlari va nuqtalarda joylashgan.To‘rtburchakning yuzini toping.

A) 28 B) 39,5 C) 33 D) 36

9. Agar parabolaning uchlari nuqtalardan o‘tgan bo‘lsa, p+q ni toping

A) 3 B) 2 C) -1 D) 1

10. Hisoblang:

A) 3 B) C) D) 2

11.Tengsizlikni yeching :
A)
B)
C)
D)

12. а soni sonining 25% ini tashkil etadi. с soni esa sonining 40% ini tashkil etadi. с soni a sonining qancha foizini tashkil etadi?

A) 50 B) 80 C) 100 D) 12

13. ni hisoblang.

A) 1 B) 10 C) 100 D) 200

14. Agar bo‘lsa , toping

15.To‘g‘ri burchakli uchburchakning perimetri 15cm, gipotenuzasi 7cm bo‘lsa, uning yuzasini toping.

A) 3,75 B) 4,25 C) 4 D) 6,25

A) 16 B) 28 C) 82 D) 32

16 Parabola uchining koordinatalarini toping:

A. B. C. D.

17. Parabolaning koordinata o’qlari bilan kesishish nuqtalarining koordinatalarini toping.

A. B. C. D.