7-sinf Matematika 4-chorak

2

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7-sinf Matematika 4-chorak

Testni Mamadoliyev Diyorbek tayyorladi.

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Hisoblang:

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Ifodani soddalashtiring:

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Ko`phadning son qiymatini toping: x2 +2xy +y2, bunda x = 1,2, y = -1,2.

 

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Algebraik ifodaning qiymatini toping:, bunda a = 10, b = -5

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Teng yonli uchburchakning asosi yon tomonidan 3 birlikka kam, perimetri 36 ga teng bo`lsa uchburchakning yon tomonini toping.

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To`g`ri chiziqning ixtiyoriy nuqtasidan unga nechta perpendikulyar to`g`ri chiziq o`tkazish mumkin ?

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Birhadning son qiymatini toping:  bunda y=-15,    x=6

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Agar uchburchakning ikkita burchagi 600 va 400 ga teng bo`lsa, uning noma’lum burchagini toping

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Soddalashtiring: (c-3)2 – (c+3)(3-c)

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Agar uchburchakning ikkita burchagi 400 va 300 ga teng bo`lsa, uning uchinchi burchagiga qo`shni burchagini toping

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Ko`paytirishni bajaring: (x2 + 1)(x -1)(x+1)

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Tenglamani yeching:

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Agar qo`shni burchaklar gradus o`lchovlari nisbati 4:5 bo`lsa, ularni toping.

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Har biri x so`mdan 12 ta daftar va har biri y so`mdan 2 ta ruchka sotib olindi. Hamma xarid qancha turadi ?

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Bo`yi enidan 3 marta katta bo`lgan to`g`ri to`rtburchakning perimetri 120 sm ga teng. Shu to`g`ri to`rtburchakning bo`yini toping.

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Amallarni bajaring: 12,42 + (4,234 - 2,42).

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(x -1) : (x+1) = 3 : 5 tenglamaning ildizi x_{0} bo`lsa, 41 - x_{0} ifodaning son qiymatini toping.

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Tenglamani yeching: (3x - 4) - (6 - 2x) = 3.

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Ikki to`g`ri chiziqning kesishishidan hosil bo`lgan burchaklardan uchtasining yig`indisi 250 gradus ga teng. Burchaklardan kichigini toping.

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Algebraik ifodaning qiymatini toping: 3a + 2b, bunda a = 3, b = -5.

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a=20, b=15 bo‘lganda  algebraik kasrning son qiymatini toping?

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Quyidagi kasrlar uchun umumiy mahrajni toping:

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Umumiy ko‘paytuvchini qavsadan tashqariga chiqaring: (x+y)6z-8(x+y)

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Quyidagi kasrlar uchun umumiy mahrajni toping:

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Ifodani soddalashtiring va yig‘indini toping:

0%

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86%-100% 5 baho

71%-85% 4 baho

56%-70% 3 baho

55% va kamiga 2 baho

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