7-sinf algebra testlar

7-sinf algebra testlar
1. Tenglamaning yechimini toping: 9x+11=23+5x A) 4 B) 3 C) -3 D)12
2. Tenglamaning ildizi 2 chiqishi uchun a ning o‘rniga qanday son qo‘yish kerak? 8x-(7x+a)=9 A) 9 B) -7 C) 7 D)8
3. Otasi 40 yoshda, ogli esa 16 yoshda. Necha yildan keyin otasi oqlidan 2 marta katta boladi? A) 9 yildan keyin B) 8 yildan keyin C) 7 yildan keyin D) 10 yildan keyin
4. Ifodani qiymatini toping: (x⁷•y⁵):(x⁶•y³) bunda x=3 , y=-2 A) 12 B) 36 C) -18 D) -72
5. Asosi 4 bolgan daraja shaklida yozing: 64·256:16; A) 4⁴ B) 4⁷ C)4⁵ D)4³
6. Tenglamaning yechimini toping: x · 3⁵ =3⁸ A) 3 B) 3¹³ C) 9 D)27
7.Ko’paytmani daraja shaklida yozing: (2,5cd)² A) 6,25cd B) 6,25c²d² C) 5c²d² D) 5c³d³
8. Quyida keltirilganlar orasidan kophadlarni korsating: 1) xy²; 2) 3xy4xy²x²; 3) abc+bca²; 4)xz²+yz²; 5) 2xyz; 6) xy+yz+xz; A) 3,4,6 B) 2,3,4 C) 2,3,6 D) 4,5,6
9. Algebraik ifodaning qiymatini toping: 4a(5a-3b)-5a(4a+b), bunda a= -2, b= -3 A) -102 B) 112 C) -194 D) -112
10. Ona farzandlari uchun a so‘mdan 8 ta rasm daftar, b so‘mdan 5 ta ruchka, c so‘mdan 20 ta daftar sotib oldi. Jami xaridni hisoblash uchun ifoda tuzing. A) 8a+5b+20c; B) 8a+25 (b+c); C) 800abc; D) 8a+100ba.
11.Tenglamani yeching: 0.3(x+3)=0.4(x-3) A)-12 B)21 C)30 D)-15
12. 3 ta turli xatni 3 ta turli o‘quvchiga necha xil usulda berish mumkin ( har bir o‘quvchiga bittadan berish sharti bilan). A) 9 B) 6 C) 27 D) 3
13. Ko‘phadni birhadga ko‘paytiring. (4a-3x)•(-3x) A) 12ax+9x² B) -12ax-9x² C)-12ax+9x² D) T.j.y
14.Hisoblang: 137²+137·63; A) 27400 B) 26400 C) 25600 D) 25800
15.. Ko`paytuvchilarga ajrating: 9a²·b²-12a·b³; A) 3ab²(3a-4b) bB) 3(a²b²-4ab³) C) 9(a²b²-ab³) D) ab(9ab-12ab²)
16 Hisoblang: 139·15+18·139+15·261+18·261; A)8800 B)9600 C)9900 D)10000
17. Tenglamani yeching: x(x+3)+x+3=0; A) x=3; x=-1 B)x=3; x=1 C)x=3; x=-1 D) x=-3;x=-1
18. Ifodani soddalashtiring: (x-y)²+(x+y)²; A) 2x²+2y² B) 2x²+y² C) x²· (2+2y²) D) y²· (2x²+2)
19. . To`g`ri burchak necha gradusga teng? A) 180° B) 80ْ C) 90ْ d) 100ْ
20. Teng tomonli uchburchakning peremetri 27 m bo`lsa tomoni uzunligini toping. A) 3m B) 6m C) 9m D) 7m
21. Teng yonli uchburchakning asosi yon tomonidan 2m uzun, peremetri 32m ga teng bo`lsa asosini uzunligini toping. A)10 B)12 C) 34/3 D) 28/3
22.Hisoblang: -(-3)³•(-1/3)² A)-3 B) 3 C) -1/3 D)1/3
23.Matematika to‘garagida faol qatnashuvchi 10 ta o‘quvchidan 4 tasini Xalqaro matematika olimpiadasiga yuborish uchun ularni necha xil usulda tanlasa bo‘ladi? A) 210; B) 200; C) 40; D) 104.
24.Uchburchakning bir tomoni ikkinchi tomonidan 3 sm uzun, uchinchi tomonidan esa 5 sm qisqa. Agar uchburchakning perimetri 41 sm bo‘lsa, uning eng uzun tomoni eng qisqa tomonidan necha marta uzun? A) 2; B) 1,5; C) 1,3; D) 1,8
25. 4 :(2x+5)=2 :(3x-2) tenglamaning ildizi x₀ bo‘lsa, 4x₀ + 11 ifodaning son qiymatini toping. A) -18; B) -20; C) 19; D) 20.