Matematika 8-sinf uchun. Test №1


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8-sinf

A)42 B)36 C)54 D)52 E)62


23. Har bir tashqi burchagi 240 bo’lgan

muntazam ko’pburchakning tomonlari nechta?


A)24 B)18 C)15 D)12 E)10


24. R radiusli aylanaga ichki chizilgan muntazam sakkizburchakning tomonini toping.
A) B) C) R D) 3R E) 2R
25. Rombning yuzi 24 ga , diagonallarining nisbati 0,75 ga teng . Shu rombning tomonini toping .

A)7 B)4 C)5 D)10 E)9


Test №9

1.18 va 12 sonlari eng kichik umumiy karralisining eng katta umumiy bo’luvchisiga ko’paytmasini toping .


A)220 B)218 C)214 D)216 E)212


2. . Yig’indining oxirgi raqamini toping

16∙27∙38∙19+22∙43∙98



A)8 B)6 C)4 D)2 E)0

3. bo’lsa nimaga teng

A) B)10 C)9 D)14 E)12


4. Hisoblang

A)7 B)49 C) D) E)3

5. ,0000087 sonini standart ko’rinishda yozing

A)8,710-5 B)8,7107 C)8,710-6 D)8,710-7 E)8,710-4

6. . Son o’qida -4 dan 2,3 birlik masofada joylashgan sonlarni aniqlang .

A)-6,3 B)-6,3 va 1,7 C)6,3 va 1,7 D)-6,3 va -1,7 E)-1,7

7. a< 0 ; b2-4ac<0 bo’lsa, y=ax2+bx+c parabolaning grafigi qaysi choraklardan o’tadi?

A) I, II B) I, II, III va IV C) II va III D) I, II, va IV

E) III, IV



8. y=-2x2+5x-3 parabolaning eng kichik qiymatini toping.

A) B)49 C) D) E) aniqlab bo’lmaydi

9. . ni hisoblang

A) B) C) D) E)

10. . Ushbu ifodani ko’phad shaklida tasvirlang

A) B) C) D) E)

11. ni va orqali ifodalang

A) B) C) D) E)

12. Ko’paytuvchilarga ajrating

A) B) C) D) E)ko’paytuvchilarga ajralmaydi

13. Ko’phadni ko’paytuvchilarga ajrating

A) B) C) D)

14. Soddalashtiring

A)2x B)2y C)-2y D)-2x E)2x-2y

15. A va B pristanlar orasidagi masofa 96 km . A pristandan oqim bo’ylab sol jo’natildi . Xuddi shu paytda B pristandan oqimga qarshi qayiq jo’nadi va 4 soatdan keyin sol bilan uchrashdi . Agar daryo qimining tezligi 3 km/soat bo’lsa , qatiqning turg’un suvdagi tezligini toping .

A)20km/s B)s19km/s C)17km/s D)24km/s E)21km/s



16 To’g’ri to’rtburchakning perimetri 32 ga , yuzasi esa 48 ga teng . Uning daiagonallari orasidagi burchakning sinusini toping .

A) B) C) D) E)

17. . To’g’ri to’rtburchakning ikkita uchidan diagonaliga tushirilgan perpendikulyar uning diagonalini uchta teng bo’lakka ajratadi . To’g’ri to’rtburchakning kichik tomoni a ga teng . Uning katta tomonini toping .



A)2a B) C) D)3a E)1,5a

18. . Tomoni 1 ga teng bo’lgan ikkita kvadrat ustma-ust qo’yildi . Shundan so’ng kvadratlardan biri ularning umumiy simmetriya markaziga nisbatan 450 ga burildi . Hosil bo’lgan figuraning yuzini hisoblang .



A) B)1,2 C)1,25 D) E)

19. Qavariq to’rtburchakning diagonali uni nechta uchburchakka ajratadi ?

A)4 B)5 C)6 D)7 E)8

20. Muntazam uchburchakning yuzi 64 ga teng . Uning perimetrini topimg .



A) B) C)64 D) E)

21. Tomonlari 11,12 va 13 ga teng bo’lgan uchburchakning katta tomoniga tushirilgan medianasi uzunligini toping .

A)10 B)9 C)8,5 D)9,5 E)8

22. . Uchburchakning tomonlari 6 , 7 va 8 ga teng . Katta tomoniga bissektrisa o’tkazilgan . Hosil bo’lgan kesmalarning kichigini toping .



A)3 B)5 C) D) E)

23. R radiusli aylanaga ichki chizilgan aylana radiusini toping



A) B) C) R D)

E)

24. Muntaza ko’pburchakning peremetri 60 ga teng, unga ichki chizilgan aylaning raduisi 8 ga teng. Shu ko’pburchakning tomonini toping.

A) 240 B) 480 C) 120 D) 60 E) 180

25. Aylanaga tashqi chizilgan teng yonli trapetsiyaning asoslari 54 va 24 g teng. Aylaning radiusini toping.

A) 15 B) 16 C) 17 D) 18 E) 19

Matematika.



8-sinflar uchun tuzilgan test.

1. ning qanday qiymatlarida ifoda manfiy qiymatlarni qabul qilad?

A) B) >-2 C) >4 D) >0 E) >2

2. Tengsizliki yeching:

A) <0,5 B) <-0,5 C) >1 D) x>2 E) >0,5

3. Nechta butun son tengsizliklar sistemasining yechimi bo’ladi?

A) 1 B)2 C) 3 D)4 E)5



4. Tenglamaning nechta ildizi bor?



  1. 1 B) 2 C) 3 D) ildizi yo’q E) cheksiz ko’p.

5. 0,068345 sonining mantisssasini aniqlang.

A) 6,8 B) 6 C) 0,6 D) 68 E) 6,8345∙10-2



6. Haqiqiy sonlar bu…

A) ko’rinishdagi sonlar

B) Natural va butun sonlar C) Irratsional sonlar



D) Davriy kasrlar E) Ratsional va irratsional sonlar.

7. Tenglamani yeching.

A) =2 B) x<2 C) >2 D) E)

8. nimaga teng?

A) B) C) D)11 E) -11

9. va tenglamaning ildizlari bo’lsa, nimaga teng?

A) 2 B) 3 C) 4 D)-4 E) -3



10. Parabolaning tarmoqlari pastga yo’nalgan, uning uchining absissasi va ordinaasi manfiy bo’lsa, parabola tenglamasi koeffitsiyentlarining ishoralarini aniqlang.

A) B)

C) D)

E)

11. Tengsizlikni yeching.

A) 2<<5 B) -2<<5 C) -3<<5 D) -1<<5

E) 1<<5

12. ni hisoblang.

A) 25 B) 125 C) 1 D) 5 E)

13. ni soddalashtiring.

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

14. A punktdan B punktga qarab mototsiklchi jo’nadi va bir vaqtda B punktdan A punktga xuddi shu yo’ldan velosipedchi yo’lga ciqdi. Mototsiklchi B punktga velosipedchi bilan uchrashganidan keyin 2 soat keyin yetib keldi. Velosipedchi esa mototsiklchi bilan uchrashganidan keyin 4,5 soat keyin yetib keldi. Velosipedchi va mototsiklchi necha soat yo’lda bo’lgan?



A) 7,5 soat, 5 soat B) 6,5 soat, 5 soat B) 7,5soat, 4 soat D) 6,5 soat, 4 soat E) 8,5 soat, 4 soat

15. ni qisqartitring.

A) B) C) D)

E)

16. Uchburchakning bir tomoni 9 ga, shu tomonga tushirilgan balandligi 15 ga teng bo’lsa, uchburchakning yuzini toping.

A) 135 B) 45 C) 67,5 D) 75 E) aniqlab bo’lmaydi.

17.Agar rombing diagonallari 2 va 3 sonlariga proporsional, yuzi esa 12 sm2 bo’lasa, romb diagonallarini toping toping.



A) 4; 6 B) 3; 5 C) 7; 6 D) 2; 3 C) 3; 4,5

18. ABC uchburchakda AC tomonga tushirilgan BD balandlik uni AD va DC kesmalarga ajratadi. Agar A=450 va AD=4 bo’lsa, BD balandlikni toping.

A) 3 B) C) 2 D) 5 E) 4

19. Uchburchakning tomonlari 5; 10; 10 bo’lsa, uchburchak turini aniqlang.

A) to’g’ri burchakli B) o’tkir burchakli. C) to’g’ri burchakli D)Bunday uchburchak mavjud emas.

E) Aniqlab bo’lmaydi.

20. Teng yonli uchburchakning yon tomoni 6, asosiga tushirilgan balandligi esa 4 ga teng. Tashqi chizilgan aylaning radiusini toping.

A) 4 B) 3 C) 4,5 D) 5 E) 6

21. Aylaning AB diametri CD vatariga perpendikul-yar va uni P nuqtada kesib o’tadi. AP=4, PB=9 bo’lsa, CD ni toping.

A) 5 B) 4 C) 6 D) 7 E) 5

22. Har bir tashqi burchagi 240 bo’lgan

muntazam ko’pburchakning tomonlari nechta?

A)24 B)18 C)15 D)12 E)10

23. R radiusli aylanaga ichki chizilgan muntazam sakkizburchakning tomonini toping.



A) B) C) R D) 3R E) 2R

24. ning birlik vektorga skalyar ko’paymasini hisoblang.

A) 0 B) 5 C) -5 D) 3 E) -3

25. Tomonlari 3,7,8,10 bo’lgan to’rtburchakka o’xshash to’rtburchakning peremetri 140. Su to’rtburchakning katta tomonini toping.

A) 30 B) 40 C) 50 D) 20 E) 6



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