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5-sinf Matematika olimpiada №1

InfoMaster

Aprel 29, 2022

53 Ko'rishlar 106 izohlar

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5-sinf Matematika olimpiada №1

2019-yil bilimlar bellashuvida tushgan savollar

Ismi familiyangizni kriting!

Iltimos ma'lumotlaringizni to'g'ri kritishga e'tibor bering!

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1. Basseyn ikkita quvur bilan 7,5 soatda to`ldiriladi. Birinchi quvurning yolg`iz o`zi basseynni ikkinchi quvurning yolg`iz o`zi to`ldirganidan 8 soat tezroq to`ldiradi . Birinchi quvurning alohida o`zi basseynni necha soatda to`ldira oladi ?

A) 15

B) 15,5

C) 16

D) 12

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2. Hisoblang:

A) 33/76

B) 33/56

C) 15/28

D) 125/333

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3. Sotuvchi kilosi 1500 so`mdan 100 kg olma sotib oldi . 20 kg maydaroq olmalarni sotuvchi 1750 so`mdan , qolganlarini 2000 so`mdan sotdi . Bu tijoratda sotuvchi necha foiz foyda qilgan ?

A) 30%

B) 80%

C) 40%

D) 50%

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4. Zavodning 3 ta sexida 2740 nafar ishchi ishlaydi . Ikkinchi sexda birinchisiga nisbatan 140 ta ko`p ishchi , uchinchi sexda esa ikkinchisiga nisbatan 1 ,2 marta ko`p ishchi ishlaydi . har bir sexda qanchadan ishchi ishlaydi ?

A) 760;900;1080

B) 760;980;1000

C) 750;900;1090

D) 790;900;1050

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5. Ifodaning qiymatini toping :

A) 664/49

B) 37/49

C) 96/59

D) 576/49

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6. Umumiy bahosi 225 dinor bo`lgan ikki xil qimmatbaho muynali teri xalqaro bozorda 40% foydasi bilan sotildi . Agar birinchi xil teridan 25% ikkinchisidan 50% foyda qilgan bo`lsa har bir terining bahosi necha dinor bo`lgan ?

A) 10 va 135dinor

B) 90 va 135dinor

C) 90 va 125dinor

D) 80 va 235dinor

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7. Parovoz ma`lum masofani 2,25 sutkada o`tishi kerak edi , lekin u har soatda mo`ljaldagidan 25 km ko`p yo`l o`tganligi va shuning uchun mo`ljallangan masofani 2 sutkada o`tganligi ma`lum bo`ldi .Paravoz qancha masofa o`tgan ?

A) 10080

B) 1080

C) 10800

D) 10000

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8. 1+2-3+4+5-6+7+8-9+…208+209-210 ni hisoblang

A) 7245

B) 7275

C) 7445

D) 7425

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9. Birdan o`ngacha bo`lgan natural sonlar ko`paytmasining natural bo`luvchilari sonini toping ?

A) 280

B) 32

C) 270

D) 275

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10. Kubning sirti 294 sm² ga teng . Uning barcha qirralari yig`indisini toping ?

A) 84 sm

B) 75 sm

C) 74 sm

D) 85 sm

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11. x , y , z Natural sonlar uchun 28x+30y+31z =365 munosabat o`rinli bo`lsa x+y+z ni toping .

A) 12

B) 11

C) 8

D) 10

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12. p qanday tub son bo`lganda 71 p +1 biror natural sonnig kvadratiga teng bo`ladi ?

A) 83

B) 53

C) 75

D) 73

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13. Otasi 41 yoshda katta o`g`il 13 yoshda , qizi 10 yoshda kichik o`g`li 6 yoshda . Necha yildan keyin otasining yoshi hamma bolalari yoshlarining yi`gi`indisiga teng bo`ladi ?

A) 5

B) 4

C) 7

D) 6

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14. Hisoblang:

A) 1/27

B) 4/27

C) 27/2

D) 2/27

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15. Idish to`g`ri burchakli parallelepiped shaklida bo`ib , uning bo`yi 60 sm eni 45 sm va balandligi 47 sm ga teng. Agar idishdagi suv sathi 40 sm balandlikda bo`lsa , unda necha litr suv bor ?

A) 108

B) 115

C) 135

D) 106

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16. Hisoblang :

A) -4000

B) 1000

C) 0

D) 1000

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17. Agar uch xonali sondan 6 ni ayirsak ayirma 7 ga bo`linadi , 7 ni ayirsak ayirma 8 ga bo`linadi , 8 ni ayirsak ayirma 9 ga bo`linadi .Bu sonni toping .

A) 936

B) 143

C) 503

D) 167

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18. 3 ga bo`linmaydigan sonning kvadratidan bittaga kam bo`lgan son , qaysi songa qoldiqsiz bo`linadi?

A) 4

B) 6

C) 3

D) 2

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19. Ikki sonning ayirmasi 30 ga teng , nisbati esa 3 ga teng . Shu sonlarni toping .

A) (46;16)

B) (45;15)

C) (42 ;12)

D) (55;25)

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20. Hisoblang : 1,1(6)+0,12(3)

A) 1,29

B) 187/90

C) 19

D) 7/30

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21. Ikki sonning yi`g`indisi 150ga , shu sonlarning EKUBi 30 ga teng natural qiymatlaridagi yechimlar juftligi nechta ?

A) 4

B) 3

C) 2

D) 1

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22. Teplohod ikki pristan oralig`idagi masofa daryo oqimi bo`yicha 7 soat , oqimga qarshi 9 soat o`tadi . Agar oqimning tezligi 2 km/s bo`lsa pristanlar orasidagi masofani aniqlang ?

A) 36km

B) 146km

C) 566km

D) 126km

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23. Agar uch xonali sondan 6 ni ayirsak ayirma 7 ga bo`linadi , 7 ni ayirsak ayirma 8 ga bo`linadi , 8 ni ayirsak ayirma 9 ga bo`linadi .Bu sonni toping .

A) 167

B) 503

C) 936

D) 143

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24. Qanday ikki xonali son o`z raqamlar yig`indisidan 4 marta , ko`paytmasidan 3 marta katta ?

A) 32

B) 12

C) 24

D) 40

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25. x soni y ning p foiziga teng .y soni x ning 4p foiziga teng . p ni toping ?