Matematika. 4,5-sinf. Olimpiada savollari.
1. 7 raqami ishtirok etgan nechta ikki xonali son mavjud ?
A) 8 B) 9 C) 17 D) 18
2. 18 sonining ong tomoniga 0 qoysak, bu son nechtaga ortadi ?
A) 10 B) 162 C) 60 D) 180
3. Maqsuda kitobning 78 betini oqigandan song, kitobning qolgan qismi u oqiganidan 23 bet kop ekani malum boldi. Kitob necha betlik ?
A) 179 B) 101 C) 124 D) 147
4.Amallarni bajaring: (156 + 244) : 40.
A) 9 B) 6 C) 10 D) 25
5. Eng katta uch xonali sondan eng kichik uch xonali sonni ayiring.
A) 1 B) 99 C) 899 D) 900
6. Jami ikki xonali sonlar nechta?
A) 99 B) 90 C) 89 D) 10
7. Tenglamani yeching: x- 678 = 5643.
A) 6322 B) 6321 C) 12423 D) 1137
8. Raqamlar bilan yozing: Ikki million ottiz tort ming olti.
A) 2346 B) 234006 C) 2034006 D) 2304006
9. Qosh tengsizlikni nechta natural son qanoatlantiradi: 30 < x < 41
A) 13 B) 12 C) 11 D) 10
10. 56437 sonini yuzlar xonasigacha yaxlitlang.
A) 56440 B) 56000 C) 56500 D) 56400
11. Ikki nuqtadan nechta togri chiziq otkazish mumkin ?.
A) 2 B) 4 C) 1 D) istalgancha
12.Yozuvida faqat 1,2,3 raqamlari ishtirok etgan uch xonali sonlar nechta ?
A) 3 B) 4 C) 6 D) 123
13. Yigindini toping: 17654982 + 43564329.
A) 61219311 B) 60113201 C) 61432871 D) 60986431
14. n + 29 >49 tengsizlikni qanoatlantiruvchi natural sonlardan eng kichigini toping?
A) 20 B) 21 C) 30 D) 29
15.Ayirishni bajaring: 45632 - 37639.
A) 7993 B) 8993 C) 8003 D) 7003
16. Hisoblang: 20 - 19 + 18 - 17 + ... + 4 - 3 + 2 - 1 .
A) 102 B) 10 C) 20 D) 105
17. Amallarni bajaring: 169 - 89 + 20.
A) 60 B) 238 C) 278 D) 100
18. Togri tortburchak shaklidagi ekin maydonining eni 120 m, boyi enidan 30 m ortiq. Maydonning perimetrini toping.
A) 470 m B) 300 m C) 150 m D) 540 m
19. 41x -300 ifodaning x = 20 bolgandagi qiymatini toping.
A) 110 B) 520 C) 135 D) 3820
20. Kamayuvchi 24 taga ortib, ayriluvchi 14 taga ortsa, ayirma qanday ozgaradi.
A) 38 taga ortadi B) 10 taga kamayadi C) 10 taga ortadi D) 38 taga kamayadi
21.Kopaytmani hisoblang: 127 · 36.
A) 4572 B) 6542 C) 2596 D) 5642
22. Amallarni bajaring: 54 ∙ 67 + 67 · 46.
A) 4536 B) 5784 C) 6342 D) 6700
23. a + b = 50 bolganda, 15 · a + 15 · b ni hisoblang.
A) 1540 B) 750 C) 700 D) 600
24. Kopaytmani toping: 170 · 500 · 200.
A) 1700000 B) 175200000 C) 15800000 D) 17000000
25. Samolyot 6 soatda 4500 km masofani uchib otishi uchun qanday tezlik bilan yurishi kerak ?.
A) 900 km/soat B) 750 km/soat C) 800 km/soat D) 850 km/soat
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