a 4, b 6, h bo’lsa, S= A. 48 B 18 c 36 d 48 e 8

7-sinf test
1. a=2.4 , b=3.6, h=1.6 bo’lsa, S=
A.48 B.3.18 C.6.36 D.0.48 E.4.8
2. Ifodani soddalashtiring (-a+b)(-8)+2(6a-5b)
A) 20a-18b B) 4a+2b C) 20a-2b D) 4a-18b
3. Ko’phadni ko’phadga ko’paytiring (-c+3)(-2c+7)
A) 3c²-13c+21 B) 2c²-13c-21 C) 2c²-13c+21 D) 2c²+13c+21
4. Bo’lishni bajaring (7a³-8a²):a²+(15a²-9a):(-3a)
A) 2a-11 B) 2a-5 C) 2a+5 D) a+5
5. Tenglamani yeching 3x(x²-8)-3x³=12
A) 0.5 B) -2 C) 2 D) -0.5
6. Tenglamani yeching: 2(3-8x)+1=6-8 (1+2x)
A) Ø B) ∞ C) 0 D) 6
7. Sonli ifodanin qiymatini toping
A) 2/3 B) -2/3 C) 3/2 D) -3/2
8. Tenglaman yeching: 3(x+2)-2(x+3)=7-5(x+1)
A. -1/3 B. 1/3 C. -1 D. 2 E.-2/3
9. Hisoblang
A) 0.5 B) -1/2 C) 2 D) 6
10. Ona farzandlari uchun a so’mdan 8 ta rasm daftar, b so’mdan 5 ta ro’chka , c so’mdan 20 ta daftar sotib oldi.Jami xaridni hisoblash chun ifoda tuzing.
A. 33(a+b+c) B. 8a+25(b+c) C. 80abc D. 8a+abc E.8a+5b+20c
11. Teng yonli uchburchakning asosi yon tomonidan 5 birlikka ortiq, perimetri 50 ga teng bo`lsa uchburchakning yon tomonini toping
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12. Sayohatchilar guruhidagi erkaklarning ayollar soniga nisbati 5:2 kabi. Agar sayohatga 14 ta ayol chiqgan bo’lsa erkaklar sonini toping?
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13. 350; 240 va 150 sonlarinin EKUB ini toping
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14. 1:500000000 masshtabli xaridada ikki shaxar orasidagi masofa 4 sm bo’lsa, shu shaxarlar orasidagi masofa necha km?
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15. 40 ning 20 % iga 3/4 qismi 18 ga teng bo’lgan sonni qo’shing
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Ism Familiya __________________________________________________________________