Matematika 2-guruh Yig`indini toping: 89-(-61)+

Matematika 2-guruh

1. Yig`indini toping: 89-(-61)+(-170).
A)70 B)-90 C)-3 D)-20 E)20
2. Tenglamaniyeching:
A)12 B)14 C)13 D)1018
3. ga teskari sonni toping?
A) 6 B) -6 C) D)
4. Hisoblang.
A)4 B)3 C)-2 D)
5. qismi 4 ga teng bo’lgan sonni toping.
A) B) C) D)
6. Radiusi 3 sm bo’lgan doira yuzini toping ( П = 3,14 deb olinadi).
A) 28,026 sm² B) 27,126 sm²
C) 27,26 sm² D) 27,936 sm² E) 28,26 sm².
7. Yuzasi bo`lgan doira aylanasining uzunligini hisoblang.
А) B) C) D)
8. Agar kamayuvchini 16 ta va ayiriluvchini 20 ta orttirilsa, ayirma qanday o`zgaradi?
A) 4 B) 36 C) 26 D) 8
9. 1,25 songa teskari sonni toping.
A) 0,8 B) -5/4 C)8 D) -0,8
10. Ishchining maoshi dastlab 20% ga, so`ngra yana 20% ga oshirilgan bo`lsa, unung maoshi necha foizga oshgan?
А) 40 B) 50 C) 42 D) 44
11. Molning narxi 20 % ga pasaydi. Yangi narx ma'lum vaqtdan keyin 20 % ga oshdi. Dastlabki narxi 1 000 so`m bo`lgan mol hozir necha so`mdan sotilyapti? A) 960 so`m B) 1 000 so`m C) 800 so`m
D) 1 200 so`m E) to`g`ri javob keltirilmagan.
12. Bir son ikkinchi sondan 6 ta ortiq. Ularning o’rta arifmetigi 20 ga teng. Shu sonlardan kattasini toping.
A) 23 B) 27 C) 33 D) 26
13. Ikkita sonning yig`indisi 140 ga teng. Birinchi sonning 8% i ikkinchi sonning 6% iga teng. Shu sonlarni toping.
A) 60; 80 B) 75; 65 C) 50; 90 D) 70; 70 E) 40; 100.
14. Hisoblang: (-2)³: (-l)⁴ + (-3)³: (-3)² - (-l)⁸: (-l)⁷.
A) 10 B) -10 C) -11 D) 12 E) -12.
15. 320 ning 25 foizi qaysi sonning 75 foiziga teng?
A) 960 B) C) 100 D) 120
16. Uchburchakning bir burchagi 40°, ikkinchisi undan 20° ga katta. Uchburchakning uchinchi burchaginitoping. A) 85° B) 110° C) 90° D) 60° E) 80°.
17. Birinchi kuni ish normasining qismi bajarildi. Ikkinchi kuni birinchi kunda bajarilgan ishning qismicha ko’p ish bajarildi. Shu ikki kunda qancha ish normasi bajarildi?
A) B) C) D)
18. necha bo`ladi?
А) 2034 B) 20244 C) 21034 D) 20304
19. Kassrlarning qaysinisi katta? va
A) 1-si B)2-si C) teng D) taqqoslab bo`lmaydi
20. Uzunliklari 2,3,4 ,5,6 bo’lgan kesmalardan nechta uchburchak yasash mumkin
A) 3 B) 4 C) 5 D) 6 E) 7
21. Sutdan 25% qaymoq, qaymoqdan 20% sariyog` olinadi. 240 kg sutdan qancha sariyog` olinadi.
A) 7kg B) 6kg C) 12kg D) 18kg E) 16kg
22. Ifodaning qiymatini toping? -(a-(-b))=?
Bu yerda a= -2; b= -3;
A) -1 B) 5 C) 1 D) -5
23. a, b butun sonlar bo’lsa, qaysi tenglik har doim to’g’ri bo’ladi
A) B) |a-b|=
C) |a|-|b|=|a-b| D) |a|+|b|=|b|+|a|
24. MNPQ kvadrat uchlarining koordinatalari berilgan: M(0;0), N(0;1), P(1;1), Q(1;0). Uning diagonallari kesishish nuqtasining koordinatalarini toping.
A) (1;1/2) B) (1/2; 1/2) C) (1/2;2) D) (1/3; 1/3)
25. Koordinata tekisligida ABCD kvadrat tasvirlangan. Agar A(-2;-2) , B(-2;2) , C(2;-2) bo’lsa, D nuqtaning koordinatalarini toping.
A) D(2;-2) B) D(2;2) C) D(-2;-2) D) D(-2;2)
26. 450 sonining natural bo`luvchilari sonimni toping.
A) 6 B) 18 C)16 D)8
27. Ushbu ifodaning qiymatini
va bo’lganda hisoblang. A) 1,25 B) 1 C) 0,75 D) 0,5
28. Uchta son yig’indisi 140 ga teng. Uchinchi son birinchi sondan 20 taga ortiq, ikkinchi sondan esa 10 taga kam. Ikkinchi son nechaga teng? A) 50 B) 55 C) 60 D) 70 29. Hisoblang: |- 29 | - |- 37 |.
A) 8 B) 66 C) -8 D) -66
30. a ning qanday qiymatida |a|=a tenglik o’rinli bo’ladi.
A) istalgan qiymatida
B) C) D) a>0