Matematika 7-sinf 2-вариант Ifoganing qiymatini toping, agar Х = Kasrning qiymatini toping, agar Х =


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Matematika 7-sinf 2-вариант
1. Ifoganing qiymatini toping , agar х =

2.Kasrning qiymatini toping , agar х =


  1. Ifodani soddalashting va qiymatini mtoping 0,19n - 0,87n – 0,91n + 0,87n agar n = - 1,5 bo’lsa.

A. 10,8 B. 108 V. 1,08 G. 0,108.

  1. Qovuslarni oching va soddalshtiring



  1. Tenglamalarni yeching -8,9 – (3,7 – x) = -13,6.

A.–0,1 B. 0,1 V. 1 G. -1

  1. Amallarni bajaring

A. 27 B. 3 V. 1 D. 9.
7. Birhadni standart ko’rinishga keltiring: (0,4x3 y)(-1,6ху2).
A. 6,4х3у3 B. -6,4х4у3 V.6,4х3у4 G. –6,4х3у3.
8. Ko’pgadni standart ko’rinishga keltiring:
3xy - 0,2x2 – 5xy - 0,8x2 – 4xy.
A. x2 – 6xy B. -x2 – 6xy V. 0,1x2 – xy G. -0,1x2 - xy.
9. Ko’phadlar bilan amallarni bajaring (6m + 2m2 n – 5n2) + (9m2 – 4m2 n – 8n2).
A. 3m2 – 2m2 n –13n2 B. 15m2 – 2m2 n – 13n2 V. 15m2 + 2m2 n + 13n2;
G. -15m2 – 2m2 n – 13n2.
10. Qovuslarni oching va soddalashtiring: (a - 1)∙ 2a – (a + 5) ∙ 3a.
A. -a2 – 17a B. 5a2 – 13a V. a2 – 17a G. 5a2 + 13a.

  1. Bo’lishni bajaring: (3a4b4 + 2a4 b3 – 3a3b2) : (-a3 b2).

A. 3ab – 2a + 3 B. –3ab2 – 2a + 3 V. –3ab + 2a – 3b G.-3ab – 2a + 3.

  1. Gruppalash usuli bilan ko’paytuvchilarga ajrating.

2а – 2b + ca – cb.
A. (a + b)(2 + c) B. (a - b)(2 - c) V. (a + b)(2 - c) G. (a - b)(2 + c).

  1. Ko’paytuvchilarga ajrating.-4а2 – 8аb – 4b2.

A. 4(а - b)2 B. (а – 2b)2 V. –4(a - b)2 G. -4(a + b)2.

  1. Ko’paytuvchilarga ajrating: 81a4 – 1.

A. (9a + 1)(9a - 1) B. (3a2 + 1)(3a2 - 1) V (9a2 + 1)(9a2 - 1)
G. (a2 + 1)(a2 - 1)

  1. Tenglamani yeching: 2(0,6х + 1,85) – 0,7 = 1,3х .

A. х = 3 B. х = 30 V. х = 0,3 G. х = - 30.
16. Kasrlarni qisqartiring:



17. Amallarni bajaring:

18. Amallarni bajaring:
A. 0 B. 2 V. 1 G. 4.
19. Qo’shni burchaklardan biri ikkinchisidan 800 katta.
A. 400; 1400 B. 500; 1300 V. 600; 1200 . G. 700; 1100.
20. Ikki to’gri chiziqning kesishishidan 1030 ga teng burchak hosil bo’ldi.Barcha hosil bo’lgan burchaklarni toping.
A. 930; 870 ; 870 B. 1030; 770; 770 V. 970; 970 ;830 G. 730; 1070; 1070.
21. Teng yonli uchburchakning perimetri 3,4 dm, asosi 0,8 dm. Yon tomonlarni toping.
A. 1,3 dm B. 1,1 dm V.13 dm D. 0,13 dm.
22. Uchburchakning burchaklarini nisbati 7:4:1 ga teng. Uchburchakning burchaklarini topng.
A. 1050; 500; 250 B. 950; 700; 150 V.1050; 600; 150 G. 1100; 500; 200.

  1. АВС teng yonli uchburchakning (АВ = ВС) tashqi burchagi ВСК 1100 ga teng. АВС burchakni toping.

A. 500 B. 400 V. 600 G. 300.

  1. Ikki to’gri chiziq uchinchi to'g’ri chiziq bilan kesishganda burchaklardan biri ikkinchisidan 320 ga katta. Bu burchaklarni toping.

A. 720 и 1080 B. 620 и 1180 V. 820 и 980 G. 740 и 1060.

  1. АВС va ДЕF uchburchaklar teng. ДЕF uchburchaklar burchaklari teng: D = 850; E = 500; F = 450. ABC uchburchakni burchaklarini toping.

A. A = 850; B = 500; C = 450 B. A = 450; B = 500; C = 850
V. A= 500; B = 850; C = 450 G. A = 850; B = 450; C = 500 .
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