# Practice Questions

## Set 1

1. Which unit is called as the identity unit?

2. Which of the following is the reciprocal of the reciprocal of a rational no.?

a.-1

b.0

c. The no. itself

d. None of these

3. Which no. is the multiplicative identity for rational nos.?

4. Find the product of -7/8 and -4/21.

5. show that x = -(-x) a. if x = 3 b. if x = 9

6. The distance between two miles stones 230 km & two cars start simultaneously from the milestones in opposite directions &the distance between them after three hours is 20 km. If the speed of one car is less than of other by 10km/hr., find the speed of each car.

7. A no. consists of 2 digits whose sum is 9. If 27 is subtracted from original no., its digits are interchanged. Find the original no.

8. Solve 6(3x+2)-5(6x-1) =6(x-3)-5(7x-6) +12x

9. The sum of three consecutive multiples of 7 is 357. Find the smallest no.

10. Raju is twice as old as Dipika. Five years ago his age was three times Dipika's age. Find their present ages.

## Set 2

1. How many diagonals are there in a triangle?

2.State True or False

a. All squares are rectangles

b. All rhombus are kites

3.Explain how squares are

a. Quadrilateral

b. Rhombus

c. Rectangle

4.In a quadrilateral ABCD, <D = 150 Degree & <A=<B=<C.Find <A, <B and <C.

5.The angles of a quadrilateral are in the ratio of 1:2:3:4. Find the measure of four angles. 6.Construct a rectangle ASDF with AS= 2cm & AF =3 cm.

7. Construct a rhombus with diagonals 5cm & 6.8cm

8. Construct a parallelogram ZXCV with <Z = 60 degree, ZX = 5cm, XC = 10cm.

9.Can a quadrilateral with any angle be a parallelogram?

10.Construct a quadrilateral QWER with QW=4cm, WE=5cm, WR=6cm, ER=5cm & RQ= 10cm.