8-sinf. Testlar. I-variant


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8-sinf 2 blok testlari

8-sinf test III-variant
1 Hisoblang: ( -1)( -4)( -9)…( -144) .
A) 100 B) 0 C) -10 D) 1
2   funksiya grafigida koordinatalari o’zaro teng bo’lgan nuqtani toping.
A) (1; 1) B)   C)   D) (2; 2)
3. To’g’ri chiziq B(-3; -2) va A(-1;2) nuqtalardan o’tadi. Shu to’g’ri chiziq formulasini yozing.
A)   B)   C)   D)  
4.   va   ning qanday qiymatlarida   tenglamalar sistemasi yechimga ega bo’lmaydi
A)   B)   C)   D)  
5. Ikki xonali sonning raqamlari yig’indisi 9 ga teng. Shu raqamlar bilan teskari tartibda yozilgan son berilgan sondan 27 ta ortiq. Berilgan sonni eng katta bo’luvchisini, bo’luvchilar soniga bo’lingandagi natural sonni toping?
A) 36 B) 8 C) 9 D) 6
6.   tenglama ildizlari yig`indisini toping.
A)  B)  C)  D) 
7. Trapetsiyaning uchta tomoni 4 sm dan, to’rtinchi tomoni 8 sm. Trapetsiyaning eng katta burchagini toping.
A) 1500 B) 1350 C) 1200 D) 1050
8. Trapetsiyaning katta asosi kichik asosidan 3 marta katta va uning o’rta chizig’i 20 sm ga teng. Trapetsiya kichik asosini toping. A) 12 B) 30 C) 15 D) 10
9. Rombning yuzi 15   ga, perimetri esa 20   ga teng. Shu rombning balandligini toping.
A) 4 sm B) 3 sm C) 5 sm D) 2 sm
10. Qavariq to’rtburchakning uchta burchagi yig’indisi 280o ga teng. To’rtinchi burchagiga qo’shni bo’lgan burchakning qiymatini toping
A)   B)   C)   D)  
11. 15 kishi bir-biri bilan qo’l berib salomlashganda qo’l berishlar soni nechta bo’ladi?
A) 210 ta B) 196 ta C) 225 ta D) 105 ta
12.   ni ko’paytuvchilarga ajrating
A)   B)  
C)   D) ko’paytuvchilarga ajratib bo’lmaydi.
13. a = 2,4. b = 3,6, h = 1,6, bo’lsa, s = h/2 (a+b) ifodaning son qiymatini toping?
A) 48; B) 3,18; C) 4, 8; D) 0,48;
14. a=5,1, b=4,7 bo’lsa, P= 2(a+b) ifodaning son qiymatini toping?
A) 40; B) 19,6; C) 1,96; D) 36,1
15. Qavslarni oching va soddalashtiring: 5a+(3a-(4a+3)).
A) 8a+3; B) 4a-3; C) -4a-3; D) 3-4a;
16. 8(x+2)-5x=-2(x+4,5).
A) -5; B) 5; C) 6; D) to’g’ri javob berilmagan.
17. 3(x+2) -2 (x+3)=7-5(x+1).
A) -1/3; B) 1/3; C) -1; D) 2;
18. Parallelogrammning bir tomoni ikkinchisidan to‘rt marta kam bo‘lib, perimetri 25 sm bo‘lsa, uning tomonlarini aniqlang.
а)4 ,5 sm va 8 sm; b) 2,5 va 11,5 sm; c) 5,5 sm va 7sm; d) 2,5 sm va 10 sm.
19.Rombning burchaklaridan biri ikkinchisidan 30о ortiq bo‘lsa, uning rombning barcha burchaklarini aniqlang.
а) 78о, 102о, 78о, 102о; b) 74о, 106о, 74о, 106о; c) 72о,108о, 72о,108о. d) 75о,105о, 75о,105о.
20. ABC uchburchakning tomonlari 7 sm, 8 sm va 10 smga teng bo‘lib, barcha o‘rta chiziqlari o‘tkazilgan. O‘rta chiziqlardan hosil bo‘lgan uchburchakning perimetrini aniqlang .
а) 12,5 sm; b) 11,5 sm; c) 12,6 sm; d) 16,5 sm.


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