mustaqil yechish uchun 6-sinf

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bahodir kamolov, ne’matjon kamalov matematikadan bilimlar bellashuvi va olimpiada masalalari 6-sinf. mustaqil yechish uchun masalalar 1. amallarni bajaring:        1 11 5 2 5,625 1 3 : : 1 3 18 9 3 2. 715 sonini 3 4 5 , , 4 5 6 sonlariga teskari proporsional qismlarga ajrating. 3. proporsiyaning noma’lum hadini toping:  1 2 12 : 2,5 16 : 2 3 y 4. hisoblang:        7 5 6 8 9 7 5 8 6 5. doiraning yuzi 96 % ga ortishi uchun uning radiusini necha foizga orttirish kerak? 6.hisoblang: 5 4 1 4 3 5 5 3,8 19 5 3 15 0,005          7. 1 dan 600 gacha sonlar ichida 2 ga ham 3 ga ham bo‘linmaydigan sonlar nechta? 8. tenglamani ikki usulda yeching: 2 3 2 …

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amlar. 18. pluton sayyorasining ekvatorial radiusi yerning ekvatorial radiusidan 0,18 marta kichik. yerning ekvatorial radiusi 6378km. pluton ekvatorining uzunligini toping. natijani birlargacha yaxlitlang. 19. hisoblang: 11 11 : 1, 43 : 10 0,175 : 0,35 18 153 11 51 11,75 1 0,5 3 17 56 9               20. tenglamani yeching:  2 2 2 1,5 3 5 0, 4 2,9 5 5 x x     bahodir kamolov, ne’matjon kamalov matematikadan bilimlar bellashuvi va olimpiada masalalari 21. ifodani soddalashtiring, 1,5x   va 0,5y  da son qiymatini toping: 6 1 2 2,8 2 4,5 1,2 7 3 5 x y x y                 22. bozorda sotuvchi birinchi xaridorga barcha anorlarning yarmini va yana 1kg anor sotdi. ikkinchi xaridorga qolgan …

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ada to‘g‘ri to‘rtburchakning bo‘yi 12 sm, eni esa 8 sm ga teng. shu to‘g‘ri to‘rtburchakning aslidagi yuzini toping. bahodir kamolov, ne’matjon kamalov matematikadan bilimlar bellashuvi va olimpiada masalalari 33. amallarni bajaring: 1 3 1 1 2 3 2 2 3 , 7 5 : 1 1 , 5 : 3 2 1 : 2 4 2 7 4 9 1 4 7 1 1 2 5 1 7 1 8 2 : 3 3 : 1 3 : 2 5 4 3 1 8 3 6 2 6                               34. to‘rtta sonning o‘rta arifmetigi 42 ga teng. agar shu sonlarning ikkita kattasining o‘rta arifmetigi 58 ga teng bo‘lsa shu sonlarning ikki kichigining o‘rta arifmetigini toping? 35. g‘ishtning bo‘yi, eni va balandligi …

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bilan qoplash kerak. basseynga nechta kafel kerak bo‘ladi? bahodir kamolov, ne’matjon kamalov matematikadan bilimlar bellashuvi va olimpiada masalalari 43. agar to‘g‘ri to‘rtburchakning eni 25%, bo‘yi 20% uzaytirilsa, uning yuzi necha foizga o‘zgaradi? 43. tenglamani yeching:   8 24 : 5 : 4 6 10x    44. ishchilar guruhidagi har bir kishiga topshiriqni bajarganliklari uchun bir xil miqdorda 25000 so‘mdan pul berildi. agar guruhda 3 kishi kam bo‘lganda edi, har bir kishi 40000 so‘mdan pul olar edi. guruhda necha kishi bo‘lgan va ular necha so‘mlik ish bajarganlar? 45. 180m uzunlikdagi ariqni qazish 3 kishiga topshirildi. birinchi kishi bitta o‘zi bu ishni 10 kunda, ikkinchisi 15 kunda, uchinchisi esa 30 kunda bajarishi mumkin. bu ishni tezlatish uchun uchalasi birgalikda boshlasa, ish necha kunda yakunlanadi? 46. to‘g‘ri to‘rtburchak eni bo‘yining 3 4 qismicha ortiq. agar uning perimetri 66sm ga teng bo‘lsa, uning tomonlarini toping. 47. tikuvchilar sexida buyurtma bo‘yicha 60 …

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bahodir kamolov, ne’matjon kamalov matematikadan bilimlar bellashuvi va olimpiada masalalari 6-sinf. mustaqil yechish uchun masalalar 1. amallarni bajaring:        1 11 5 2 5,625 1 3 : : 1 3 18 9 3 2. 715 sonini 3 4 5 , , 4 5 6 sonlariga teskari proporsional qismlarga ajrating. 3. proporsiyaning noma’lum hadini toping:  1 2 12 : 2,5 16 : 2 3 y 4. hisoblang:        7 5 6 8 9 7 5 8 6 5. doiraning yuzi 96 % ga ortishi uchun uning radiusini necha foizga orttirish kerak? 6.hisoblang: 5 4 1 4 3 5 5 3,8 19 5 3 15 0,005    …

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