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8-sinf. Matematika. II-variant.
4343-1717 ayirmani 10 ga bo’lgandagi qoldiqni toping. A) 1 B)5 C)2 D)0
A2+b2 ni a·b va a+b orqali ifodalang. A) (a+b)2-2ab B)(a+b)2-ab C)(a+b)2-4ab D)(a+b)·ab
X2-13x+q=0 tenglamaning ildizlaridan biri -14 ga teng. Uning ikkinchi ildizini toping. A)27 B)-1 C)-27 D)1
Qo’yidagi keltirilgan lardan qaysi biri ayniyat. 1.(x-c)(x-d)=x2-(c-d)x+cd 2. (x-e)(x+d)=x2-(e-d)x-ed 3. 12x2-y2-(8x2-5y2-(-10x2+(5x2-6y2)))=-x2+12y2 4. 3a-(2c-(6α-(c-b)+c+(α+8b)-6c=10α+9b-8c
A)1;3;4 B)2;3;4 C)1;2;4 D)1;2;3
Aylananing MN vatari 1200li yoyinitortib turadi. MN vatar o’zi tortib turgan kichik yoyning ixtiyoriy nuqtasidan qanday burchak ostida ko’rinadi? A) 1200 B)2700 C)1100 D)1000
Sayyoh muayyan masofaning 70% ni poezdda 29,8%ga paraxodda bosib o’tgandan keyin yo’l oxiriga cha yana 200 m qoldi Sayyi=oh poezdda necha km yo’l bosgan. A) 80 B)70 C)85 D)75
·αx =3x+1 tenglama α ning qanday qiymatlarida yechimga ega bo’lmaydi? A)α=2 B)α≠1 C)α=3 D)α≠2
A) 4,5 B)0,45 C)4,9 D)4,2
A) -6α+2 B)18α2-6α C)9α2-3α D) -3α+2
10 . Kvadratning perimetri 20% ga uzaytirilsa , uning yuzi necha % ga kamayadi? A) 20 B)25 C)40 D)44
Agar x1 va x2 9x2+3x-1=0 tenglamaning ildizlari bo’lsa, ning qiymatini toping. A)-1 B)1 C)2 D)3
Amallarni bajaring. A) 1 B)6 C) d)5
Ushbu a=0,5(3) b= c=1-0,48(1) sonlar uchun quyidagi munosabatlardan qaysi biri o’rinli? A) a
Tengsizlikni qanoatlantiruvchi x ning eng kichik natural qiymatini toping. A)1 B)3 C)6 D)5
Massasi 54 kg bo’lgan mis va rux qotishmasining tarkibida 45% mis bor . Qotishma tarkibida 60% mis bo’lishi uchun unga yana qancha mis qo’shish kerak? A) 24 B)13,5 C)25 D)20,25
Teng yonli ABC uchburchakda A vaC burchaklar teng. AB:AC=5:3 va AB-AC=3 ga teng. Uchburchakning perimetrini toping. A)19,5 B)18,5 C)17,5 D)16
Tengsizliklar sestemasi butun yechimlarining o’rta arifmetigini toping. A)3 B)2,5 C)2 D)1,5
1L qatiq 1200 so’m turadi. Ayron qilish uchun 2 L qatiq 8 l suv bilan aralashtirildi. Ayronning bir litri qancha? A) 120 so’m B) 240 so’m C) 2400 so’m D) 230 so’m
1,2,3,4,…2484 sonlari orasida nechta natural sonning kvadrati bor?
ni soddalashtiring.
Yuzi 144 sm2 , balandliklari esa 8 sm va 12 sm bo’lgan parallelogrammning perimetrini toping.
Uchta sondan biri 147,2 ga teng va u shu sonlar yig’indisining 0,16 qismini, ikkinchi son esa bu yig’indining 0,35 qismini tashkil qiladi. Ikkinchi va uchinchi sonlarni toping?
Tenglamani yeching.
Ko’paytuvchilarga ajrating b2+ab-2a2-b+a
5-sinf matematika (ихтисослаштирилган)
1.Hisoblang 812*5=
A) 4060 B) 5060 C) 7060 D)8060
2.Kub hajm formulasini ko`rsating?
A) V=a2 B)V=a3 C) V=a4 D) V=a5
3.Aholiga tomorqa uchun 2ga yer ajratildi. Har bir oilaga 5ardan yer berilgan bo`lsa, nechta oila tomorqa olgan?
A) 40 B) 35 C) 50 D)45
4.4x ning qanday qiymatlarda 8x bilan 3xning yig`indisi 4466ga teng bo`ladi?
A) 604 B) 400 C)406 D) 304
5.To`g`ri kasrlarni ko`rsating? 1) 2/5 2) 9/7 3)7/15 4)45/38
A) 1.3 B) 1.2 C) 3.4 D) 2.3
6.3/16 kasrdan 4 marta katta sonni toping?
A) 9/16 B) 3/4 C) 11/16 D) 12/23
7.Tenglamani yeching? X/11=7
A) x=18 B) x=4 C) x=77 D) x=70
8.Amallarni bajaring. 7-1.5/12=
A) 5.51/12 B) 5.7/12 C) 6.5/12 D) 5.5/12
9.Hisoblang. 24+24*4=
A) 120 B) 125 C) 130 D) 121
10.Amallarni bajaring. 57+24*89-63=
A) 2100 B) 2130 C) 1220 D) 2000
11.To`g`ri burchakli parellepidning nechta yog`i bor?
A) 12 ta B) 4 ta C) 6 ta D) 16 ta
12.Qaysi javobda kub hajmi formulasi keltirilgan?
A) V= abc B)V=a3 C) S=ab D) S=a2
13.Yig`indini toping; 25,74+5,066
A) 30,806 B) 76,40 C) 30, 7466 D) 26,2466
14.Hisoblang: 3,05+4,078
A) 7,0578 B)7, 128 C) 43,83 D) 3,4578
15.Ayirmani toping: 2,03-1,203
A) 0,833 B) 1,233 C) 0,827 D) 0,8
16.Ayirmani toping: 7-3,481
A) 3,519 B) 7,481 C) 0,507 D) 10,777
17.Amallarni bajaring: 7,5-3,2+0,077
A) 4,377 B) 4,77 C)0,507 D) 10,777
18.Tenglamani yeching: 14-x=3,81+7,12
A) 3,07 B)4,93 C) 4,07 D) 10,93
19.Tenglamani yeching: x-8=4,03-3,9
A) 111,64 B) 8,13 C) 5,64 D) 9,93
20.To`g`ri tortburchakning bo`yi 3,7, eni bo`yidan 1,4 sm qisqa. Shu to`g`ri tortburchakning predmetini toping?
A) 6 sm B) 10,2 C)12 sm D) 18,8
21.Teng tomonli uchberchakning perimetri 28,8 sm ga teng. Uning tomoni uzunligini topingg.
A) 9,6 sm B) 9,16 sm C) 64 sm D) 9,06 sm
22.Teng yonli 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
23.Uchburchak perimetri 27,8 smga teng. Uning bir tomoni ikkinchisidan 3,5 sm qisqa, uchinchisidan esa 2,7 sm uzun. Shu uchburchakning eng uzun tomoni necha santimetr?
A) 18,8 sm B) 11,7 sm C) 15,3 sm D) 12,5 sm
24.Uchburchakning bir tomoni burchagi 400, ikkinchisi undan 1,5 marta katta. Uchburchakning uchinchi burchagini toping?
A) 850 B) 1100 C) 800 D)1600
25.Aylana radiusi 3 smga teng. Aylana uzunligini toping.
A) 18,624 B) 18,84 sm C) 18,64 sm D) 18,74 sm
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