Barcha fanlardan online testlar

Matematika olimpiada Tuman 2020-2021 o'quv yili

9-sinf Matematika olimpiada №1

InfoMaster

Avgust 23, 2024

163 Ko'rishlar 0

SaqlashSaqlanganOlib tashlandi 0

Tomonidan yaratilgan InfoMaster

9-sinf Matematika olimpiada №1

2020-2021 o'quv yil tuman bosqichida tushgan savollar

1 / 24

1. Abituriyentga 36 ta masala berildi. To‘g‘ri yechilgan har biriga 3 ball beriladi. Noto‘g‘risiga 2 ball chegiriladi. 88 ball to‘plashi uchun o‘quvchi nechta masalani to‘g‘ri yechishi kerak?

A) 34

B) 32

C) 30

D) 38

2 / 24

2. Tarkibida 85% suv bo‘lgan 0,5 t sellyuloza qorishmasida 75% suv bo‘lgan qorishma olish uchun necha kg suvni bug‘lantirish kerak?

A) 300

B) 400

C) 100

D) 200

3 / 24

3. Yuzi 96 sm², balandliklari 6 sm va 8 sm bo‘lgan parallelogrammning perimetrini toping.

A) 20 sm

B) 40 sm

C) 50 sm

D) 56 sm

4 / 24

4. Uchburchakning perimetri 24 sm ga teng bo‘lib, uning tomonlari uzunliklari arifmetik progressiya tashkil etadi. Shu uchburchakning kichik tomoni 6 sm bo‘lsa, uchburchak turini aniqlang.

A) O’tkir burchakli

B) To‘g‘ri burchakli

C) O’tmas burchakli

D) Bunday uchburchak yo’q

5 / 24

5. Teng yonli trapetsiyaning diagonali uni ikkita teng yonli uchburchakka ajratadi. Trapetsiyaning burchaklarini toping.

1. $82^{0},98^{0}$

2. $135^{0},45^{0}$

3. $100^{0},80^{0}$

4. $72^{0},108^{0}$

A) 4

B) 2

C) 1

D) 3

6 / 24

6. Asoslari 18 va 12 ga teng bo‘lgan teng yonli trapetsiyaning diagonallari o‘zaro perpendikulyar. Trapetsiyaning yuzini toping

A) 150

B) 400

C) 225

D) 125

7 / 24

7. Rombning diagonallari 6 va 8 ga teng bo‘lsa, uning tomonini toping.

A) 8

B) 5

C) 3

D) 6

8 / 24

8. Hovuzga uchta quvur o‘tkazilgan. Birinchisi hovuzni 12 soatda, ikkinchisi 8 soatda to‘ldiradi. Uchinchisi hovuzni 1 sutkada bo‘shatadi. Agar uchala quvur birgalikda ochib qo‘yilsa, bo‘sh hovuzning yarmi qancha vaqt(soat)da to‘ladi?

A) 3

B) 1,5

C) 2

D) 2,5

9 / 24

9. ifodani a=4, b=5 bo‘lgandagi qiymatini toping.

A) 0

B) -1

C) 2

D) 1

10 / 24

10. 60⁰ li burchakka bir-biriga tashqaridan urinuvchi ikkita aylana ichki chizilgan. Kichik aylananing radiusi ga teng. Katta aylananing radiusini toping.

A) 4r

B) 5r

C) 2r

D) 3r

11 / 24

11. Ifodaning eng kichik qiymatini toping:

A) -4

B) 12

C) 4

D) -12

12 / 24

12. Parallellogrammning 5 ga teng bo‘lgan diagonali uning 12 ga teng bo‘lgan tomoniga perpendikulyar. Parallelogrammning perimetrini toping.

A) 34

B) 44

C) 48

D) 50

13 / 24

13. Agar bo‘lsa, ni hisoblang.

A) 4

B) -4

C) ±4

D) 3

14 / 24

14. stemadan ni toping.

A) 11/7

B) 7/3

C) 7/11

D) 3/7

15 / 24

15. Tenglamani yeching: |x+6|=|x+10|

A) 6

B) -6

C) 4

D) -8

16 / 24

16. bo‘lsa, ifodaning qiymatini toping

A) 2/3

B) 3/16

C) 15/16

D) 13/16

17 / 24

17. ni hisoblang.

A) 2

B) 3

C) -2

D) 4

18 / 24

18. To‘g‘ri burchakli uchburchakka ichki chizilgan aylana urinish nuqtasida gipotenuzani 5 va 12 ga teng kesmalarga ajratadi. Uchburchak yuzini toping

A) 65

B) 48

C) 60

D) 35

19 / 24

19. Hisoblang: