7 8 sinf o`quvchilari uchun bellashuv test savollari

A) 52 taga ortadi B) 20 taga ortadi C) o`zgarmaydi

D) 20 taga kamayadi E) 52 taga kamayadi.

4. Haydovchi yo`lning 0,65 qismini o`tgach hisoblab ko`rsa, yo`lning yarmidan 30 km o`tibdi. Avtomobil yana necha kilometr yo`l yursa, manzilga yetadi ?

A) 19,5 km B) 60 km C) 130 km D) 200 km E) 70 km

5. Hisoblang: 4,028 : 0,19 + 2,4 · 1,5.

A) 34,8 B) 24,8 C) 21,2 D) 36,1 E) 24,08.

6. A va B shaharlar orasidagi masofa 520 km. Bu shaharlardan bir vaqtda bir – biriga qarab ikkita avtomobil yo`lga chiqdi. Birinchisining tezligi 75 km/soat, ikkinchisining tezligi 80 km/soat. 2,4 soatdan so`ng ular orasidagi masofa necha kilometr bo`ladi ?

A) 372 km B) 148 km C) 158 km D) 155 km E) 248 km.

7. Uchta sonning o`rta arifmetigi 12,5 ga teng. Bu 3 ta son qatoriga yana bir son qo`shib, o`rta arifmetik qiymat hisoblangan edi, u 13,2 ga teng chiqdi. Qo`shilgan son nechaga teng ?

A) 15,3 B) 14,6 C) 13,3 D) 12,85 E) 37,5.

8. Teng tomonli uchburchakning perimetri 43,4 sm ga, yon tomoni uzunligi esa 15,5 sm ga teng. Shu uchburchak asosining uzunligini toping.

A) 40,1 sm B) 12,4 sm C) 13,4 sm D) 13,3 sm E) 27,9 sm.

9. Mashina soatiga 72 km tezlik bilan 3 soat-u 20 minut yurdi. U shu masofani 2 soat-u 40 minutda o`tishi uchun qanday tezlik bilan yurishi kerak ?

A) 96 km/soat B) 82 km/soat C) 100 km/soat D) 85 km/soat E) 90 km/soat

10. Ombordagi ozuqa 4 ta qo`yga 12 kunga yetadi. Shu ozuqa 3 ta qo`yga necha kunga yetadi?

A) 9 kunga B) 16 kunga C) 10 kunga D) 18 kunga E) 15 kunga.

11. Ikki shahar orasidagi masofa 480 km. Xaritaning masshtabi 1:1000000.

Xaritada bu shaharlar orasidagi masofa qancha bo`ladi?

A) 4,8 sm B) 24 sm C) 96 sm D) 48 sm E) 480 sm.

12. To`g`ri to`rtburchak shaklidagi bog`ning 1:200 masshtabli chizmadagi o`lchamlari 50 sm va 60 sm ga teng. Bog`ning yuzini toping.

A) 5 ga B) 0,6 ga C) 6 ga D) 1 ga E) 1,2 ga.

13. 360 ning 12 % iga 10 % i 14 bo`lgan sonni qo`shing.

A) 57,2 B) 572 C) 183,2 D) 18,32 E) 193,2

14. 16 va 80 sonlarining protsent nisbatini toping.

A) 25 % B) 5 % С) 16 % D) 80 % E) 20 %

15. Perimetri 24 sm bo`lgan uchburchakning balandligi uni perimetri 14 va 18 bo`lgan ikki uchburchakka ajratadi. Berilgan uchburchakning balandligini toping.

A) 10 B) 8 C) 6 D) 4 E) 3

16. To`rtburchakning burchaklaridan biri to`g`ri burchak, qolganlari esa o`zaro 4 : 3 : 2 kabi nisbatda. To`rtburchakning kichik burchagini toping.

A) 30⁰ B) 45⁰ C) 90⁰ D) 120⁰ E) 60⁰

17. Trapetsiyaning o`rta chizig`i 20 sm ga teng, uning asoslaridan biri ikkinchisidan 8 sm katta. Trapetsiya katta asosini aniqlang.

A) 22 sm B) 23 sm C) 24 sm D) 25 sm E) 26 sm

18. Uzunligi 30 sm bo`lgan aylananing 15 ⁰ li yoyining uzunligi necha santimetrga teng ?

A) 2 sm B) 1,25 sm C) 1,5 sm D) 3 sm E) 2,25 sm

19. 4 : ( 2x + 5 ) = 2 : ( 3x – 2 ) tenglamaning ildizi x₀ bo`lsa, 4x₀ + 11 ifodaning son qiymarini toping.

A) -18 B) -20 C) 19 D) 20 E) 21

20. Ko`paytuvchilarga ajrating: ( a² + 25 )² – 100a²

A) (a-5)³(a+5) B) (a-5)(a+5)³ C) (a+5)⁴ – (10a)² D) (a-5)²(a+5) D) (a-5)²(a+5)²

7 – 8 - sinf o`quvchilari uchun bellashuv test savollari.

1. Kubning barcha qirralari yig`indisi 48 sm ga teng. Kub sirtining yuzini toping.

A) 96 sm² B) 24 sm² C) 192 sm² D) 48 sm² E) 56 sm²

2. ni hisoblang.

A) B) C) 1 D) E) 0

3. Kamayuvchi 36 taga ortib, ayriluvchi 16 taga ortsa, ayirma qanday o`zgaradi ?