Define convex and concave polygon. 2. Solve 15x – 8 x=13
3. Convert 3: 5 to percentage.
4. One card is drawn at random from a well-shuffled deck of 52cards. Find the
probability that the card drawn is a queen.
5. Add 6a+8b-5c , 2b+c-4a and a-3b-2c

SECTION- B (2X5=10)
6. Find the product of (3x2
+y2
) by (2x2
+3y2
)

7. On selling a fan for Rs810, Sunil gains 8%. .For how much did he purchase it ?
8. Two adjacent angles of a parallelogram are as 2:3. Find the measure of each of
its angles.
9. Subtract 3a(a+b+c) – 2a(a-b+c) from4a(-a+b+c)

P. Ex/Gr-8-Maths/2020-21/Page 2 of 3

10. Solve
+ 1 =

SECTION-C (3x5 = 15)
11.Find the product using suitable identity
i) 9992

ii)197 x 203 iii)532
-432
12. i)Find the SP when CP = Rs1650 and gain % =4%
ii) Find the CP when SP= Rs1596 and gain%= 12%
13. Find the product using suitable identity
i) (3x+2y) (3x -4y)
ii) (2a - b)2
iii) (3a+b) (3a-b)