Matematika 5

Ekspert a’zolari:

1. 35-maktab o’qituvchisi: D.Toirova

2. 1-maktab o’qituvchisi: X. O’rinova

3. 2-maktab o’qituvchisi: I. Rustamov

Bilimlar bellashuvi – 2013 yil.

Matematika fanidan 7 sinf uchun TEST savollari.

I variant.

1. 17827516 soni quyidagilarning qaysi biriga qoldiqsiz bo’linadi?

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

2. 48 sonining natural bo’luvchilari nechta?

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

3. 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.

4. 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) .

5. 1 dan 50 gacha natural sonlarning ko’paytmasi nechta nol bilan tugaydi?

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

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

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

7. Hisoblang: ( ) : .

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

8. 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.

9. 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.

10. Tenglamani yeching:

A) 5; B) – 4,5; C) 6,5; D) 7; E)8.

11. 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.

12. 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.

13. 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.

14. Qo’shni burchaklar bissektrisalari orasidagi burchakni toping.

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

15. 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.

16. 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.

17. a va b tog’ri chiziqlar o’zaro parallel, x ni toping.

a

2

A) 130⁰; B) 135⁰; C) 140⁰; D) 125⁰ E) 120⁰.

18. 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.

19. Ko’paytmani kasrga almashtiring: .

20. Qavslarni oching va o’xshash hadlarni ixchamlang: 2a – (2b – 3c) + a + ( 2b – ( a – c )).

21. Algebraik ifodaning son qiymatini toping:

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

22. Tenglamani yeching: .

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

24. BD teng tomonli ABC uchburchakning bissektrisasi. BCD uchburchak burchaklarini toping.

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.