Matematika 7-sinf I variant. Test savollari

Matematika test 7-sinf (ixtisos) 3- variant

1. 
   Ifodani soddalashtiring:
   

.

2. Algebraik ifodaning son qiymatini toping: , bunda .

3.Tenglamani yeching:

A) –6 B) 6 C) 0 D) yechimi yo`q
4. Agar bo`lsa, ifodaning qiymatini toping.
А)–12 B)–1 С) С)1
5. Agar bo`lsa, a ni toping.
A) B)
C) D)
6. Ifodanisoddalashtiring: 4у – (3у – (2у – (у + 1))).
A) 2y + 1 B) 2y – 1 C) y – 1 D) y + 1
7. Tenglamani yeching:
A) 9 B) 2 C) – 9 D) – 6
8. Birhadlarni ko’paytiring:

A) 12,5x¹¹y⁷ B) –12,5x⁸y⁷ C) –12,5x¹¹y⁷ D) 2,5x¹¹y⁷
9. Bo’lishni bajaring: .

10. Bo’lishni bajaring:
.
А)

11. Tenglamani yeching:

А) 4; B)5; c)3; d) .
12. Agar bo`lsa, yig`indini hisoblang.
A) 4 – a B)a – 4 C) a + 4 D) 4

13.O`ziga qo`shni burchakning 20%iga teng bo`lgan burchakni toping.

A) 25° B) 30° C) 36° D) 45°
14.Ko’phadni standart shaklga keltiring:

A) 14a²bc + a²b – ab² B) 14a²bc
C) 12a²bc + a²b – ab² D) 14a²bc – a²b – ab²
15. 2a(a –2) + (a –1)(a+3) –3a² ifodani soddalashtiring va uning a = – 0,75 bo’lgandagi son qiymatini toping.
16.Yuk mashinasi 2 soatda yengil avtomobil 1 soatda bosib o’tgan yo’ldan 20 km ko’p yo’l bosadi. Yengil avtomobilning tezligi yuk mashinasining tezligidan 1,5marta ko’p. Yuk mashinasining tezligini toping.
A) 20 km/soat; B) 30 km/soat;
C) 40 km/soat; D) 50 km/soat.
A) 4,5 B) – 4,5 C)– 3 D) –1,5
17. Teng yonli uchburchakning uchidagi burchagi 96°. Asosidagi burchaklarning bissektrisalari kesishishidan hosil bo’lgan o’tkir burchakni toping.
A) 42° B) 72° C) 80° D) 84°
18. ABC uchburchakda AB=0,5, A burchakning bissektrisasi B uchdan tushirilgan medianaga perpendikulyar. Agar BC tomonning uzunligi butun son ekanligi ma’lum bo’lsa, shu uchburchakning perimetrini toping. A) 1 С)2 С) 5 D) 2,5