Matematika. 5-sinf i-variant

7-sinf. Matematika. I-variant.

1.Yig’indini hisoblang: A)

2. a= a²b²-ab+1 ifodaning qiymatini toping. A) B)

3. Raqamlar yig’indisining 3 barabariga teng bo’lgan ikki xonali sonni toping. A) 29 B)28 C)27 D)26

4.Tenglamani yeching: A) C) D)

5.(x-1)(2-x)+(x-3)² ko’phadni standart shaklga keltiring. A) 3x²+15x+7 B)-3x+7 C)12x+4-x² D)9x+7

6. Uchburchak burchaklarining kataliklari nisbati 1:1:2 kabi, kata tomonining uzunligi esa 24 ga teng. Uchburchakning kata tomomniga tushirilgan balandlikni toping. A) 12 B)6,5 C)6 D)8

7. A sonning 25% i B sonining 20% iga teng bo’lsa A soni B sonining necha % ini tashkil qiladi? A) 55 B)80 C)40 D)60

8.

9. ifoda natural son bo’ladigan n ning natural qiymatlari nechta? A)7 B)2 C)5 D)3

10. Matematikadan o’tkazilgan imtihonda o’quvchilarning 15% I birorta ham masalani echa olmadi. 432 ta o’quvchi masalalarni yechishda xatolikka yo’l qo’ydi.Agar barcha masalalarni to’liq yechgan o’quvchilaning masalalarini umuman yecha olmagan o’quvchilarga nisbati 5:3 kabi bo’lsa, qancha o’quvchi imtihon topshirgan? A)550 B)980 C)720 D)990

11.Ikkita to’g’ri chiziq kesishidan hosil bo’lgan burchaklardan uchtasining yig’indisi 275⁰ ga teng. Shu burchaklardan kichigini toping. A) 45⁰ b) 60⁰ c)85⁰ D)70⁰

12. .Kasrni qisqartiring.
13. Yuzta sonning birinchisi (-3,5) ga teng. Har bir keyingi son oldingisidan 0,5 ga ortiq. Shu 100 ta sonning ko’paytmasini toping? A) 5 B) 0 C) -20 D)45

14.Tomonlari 11,12 va 13 ga teng bo’lgan uchburchakning kata tomoniga tushirilgan medianasini uzunligini toping. A)10 B)9 C)8,5 D)9,5

15.Hisoblang: A) 1 B)2 C)3 d)

16. 1/30 va 1/45 kasr umumiy maxrajining barcha natural bo’luvchilari soni nechta. A) 11 B) 7 c)12 D)-11

17. Hisoblang. (202²-54²+256·352):(4⁴-10²) a)4 B)1 C)2 D)5

18. 11300 ning 36% va 8400 ning 28% ining yig’indisi shu sonlarning yig’indisining 40% idan qancha kam? A) 1460 B)1360 C)1560 D)1465

19. .(1- ni hisoblang.

20.Kasr surati va maxraji ning yig’indisi 23 ga teng. Surat maxrajdan 9 ta kam. Kasrni toping.

21. Agar to’g’ri to’rtburchakning tomonlar 4 marta orttirilsa uning yuzi necha marta ortadi?

22. agar a+a^-1 =5 bo’lsa a³+a^-3 ni hisoblang.

23. tenglamani yeching.

24.Motoseklchi muljaldagi tezlikni 15 km/soatga oshirib 6 soatda 7 soatda bosib o’tishi kerak bo’lgan masofaga qaraganda 40 kmko’p yo’lni bosib o’tdi. Motoseklchini muljallangan tezligini toping.(km/soat)

25. ni hisoblang.