Matematika 5

Ekspert a’zolari:

1. 35-maktab o’qituvchisi: Toirova Dilbar

2. 1-maktab o’qituvchisi: X. O’rinova

3. 34-maktab o’qituvchisi: D. Toirov

Bilimlar bellashuvi – 2013 yil.

Matematika fanidan 7 sinf uchun TEST savollari.

II variant.

1. Hisoblang: ( ) : .

A) ; B) ; C) ; D) ; E) .

2. Ifodani ko’phadning standart shakliga keltiring: 2x ( x - 1) – ( 2x – 1 )( x + 1 ).

A) 4 x ² – 1; B) 2 x² - 3 x; C) 3 x + 1; D) 4 x ² – 5 x + 1; E) – 3 x + 1.

3. Tenglamani yeching: 0,7 ( 6 y – 5 ) = 0,4 ( y – 3 ) – 1,16.

A) 0,3; B) – 3 ; C) – 0,3 ; D) 2; E) 30.

4. Tenglamani yeching:

A) 5; B) – 4,5; C) 6,5; D) 7; E)8.

5. Kubning barcha qirralari yig’indisi 48 sm gat eng. Kub sirtining yuzini toping.

A) 96 sm²; B) 24 sm²; C) 48 sm²; D) 56 sm^2; E) 64 sm².

6. 17827516 soni quyidagilarning qaysi biriga qoldiqsiz bo’linadi?

A) 3; B) 10; C)4; D) 5; E) 9.

7. 48 sonining natural bo’luvchilari nechta?

A) 10; B) 9; C) 4; D) 5; E) 12.

8. 243 ni qanday songa bo’lganda bo’linma 15 ga, qoldiq 3 ga teng bo’ladi?

A) 17; B) 16; C) 18; D) 19; E) 21.

9. Qo’shni burchaklar bissektrisalari orasidagi burchakni toping.

A) 90⁰; B) 100⁰; C) 80⁰; D) 70⁰; E) 60⁰.

10. Perimetri 24 bo’lgan uchburchakning balandligi uni perimetrlari 14 va 18 bo’lgan ikkita uchburchakka ajratadi. Berilgan uchburchakning balandligini toping.

A) 10; B) 8; C) 6; D) 4; E) 3.

11. 72 va 96 sonlarining eng kichik umumiy karralisining eng katta umumiy bo’luvchisiga nisbatini toping

A) 10; B) 0,1; C) 9; D) 12; E) .

12. 1 dan 50 gacha natural sonlarning ko’paytmasi nechta nol bilan tugaydi?

A) 14; B) 10; C) 13; D) 11; E) 12.

13. Hisoblang: ( - 8 + 6: (- 2) – 2 ) · (- 11) .

A) 23; B) 11; C) – 11; D) -10; E) 143.

14. Institutdagi talabalarning 35 % ini qizlar tashkil qiladi. Yigitlar qizlardan 252 taga ko’p. Talabalarning umumiy sonini toping.

A) 840; B) 640; C) 546; D) 740; E) 830.
15. Uchta sonning o’rta arifmetigi 30ga, dastlabki ikkitasiniki esa 25 ga teng. Uchinchi sonni toping.

A) 44; B) 45; C) 40; D) 38; E) 36.

16. Ikkita to’g’ri chiziqning kesishishidan hosil bo’lgan uchta burchakning yig’indisi 315⁰ ga teng. Su burchaklardan kichigini toping.

A) 60⁰; B) 45⁰; C) 30⁰; D) 85⁰; E) 50⁰.

17. Yuzi tomonlari 25 sm va 16 sm bo’lgan to’g’ri to’rtburchak yuziga teng bo’lgan kvadatning

tomonini toping.

A)10; B) 20; C) 30; D) 40; E) 14.
18. a va b tog’ri chiziqlar o’zaro parallel, x ni toping.

a

2

19. Tenglamani yeching: .

20. Teng yonli uchburchakning burchaklaridan biri 40⁰ bo’lsa, qolgan ikki burchagini toping.

21. Ko’paytmani kasrga almashtiring: .

22. Qavslarni oching va o’xshash hadlarni ixchamlang: 2a – (2b – 3c) + a + ( 2b – ( a – c )).
23. BD teng tomonli ABC uchburchakning bissektrisasi. BCD uchburchak burchaklarini toping.
24. Algebraik ifodaning son qiymatini toping:

( 10a⁴ + 15a³ ) : 5a² – 18a³ : ( - 6a ) , bunda a = .

25. Asosi 10 sm bo’lgan teng yonli ABC uchburchak o’rta chiziqlaridan hosil bo’lgan MNK

uchburchak perimetri 17 sm. ABC uchburchak perimetrini toping.