1. Sonli ifodalar

5. Qavslarni ochish qoidalari
1. Qavs to’g’ri ochilgan qatorni toping.

A) 3x-(y+6)=3x-y+6 B) –(a+b-2c)=-a-b-2c C) 5+(a-(c-d))=5+a-c+d

D) (2x-(y-z))=-2x-y+z

2. Qavs to’g’ri ochilgan qatorni toping:

A) 2-((x-y)-z)=2-x-y+z B) –(a-b)+c=-a+b+c

C) –(a+2b)-c=-a-2b+c D) (-24-15)+12=24+15+12

3. Qavs to’g’ri olingan qatorni toping.

A) 2a+b-5c=2a+(b-5c) B) -a-b-c=-(a+b)+c C) 3-4+2=(4-2)-3

D) x-y-z=-(x+y+z)
4. Qavs to’g’ri olingan qatorni toping:

A) -4x+5y-2z =-(4x-5y)-2z B) a-5b-2c=a-(5b-c)

C) m-2n+k-4=(m-2n)-(-k-4) D) –p+q+1=1-(p+q)
5. Qavslarni oching va soddalashtiring. a-(2-(4a-4))

A) 5a-2 B) -5a-2 C) -5a+6 D) -6+5a

6. Ifodani soddalashtiring: -7a+(-2-3a)+4

A) 2-10a B) -10a-2 C) 10a-2 D) -4a+6

7. Ifodani soddalashtiring: -(m-n)+(m-n)

A) -2m-2n B) -2n C) -2m D) 0

8. Uchburchakning bir tomoni uzunligi a ga teng, ikkinchi tomoni esa birinchi tomonidan 5 sm uzun uchunchi tomoni birinchi tomonidan 2 sm ga qisqa. Uchburchakning perimetrini xisoblash uchun ifoda tuzing.

A) 3a+3 B) 3a+7 C) a-3 D) 3-3a

9. Hisoblang : -(-12+3)*4-(6-8)
A) -38 b) -36 C) 34 D) -34 E)38

10. Ifodani soddalashtiring: -3a+(-3-5a)+9

A)8a-6 B) 8a+6 C) 6-8a D) 6a-8