EASA style practice exercise with answers

1.

34

+ 25

× 38

− 310 =

a.

340

b.

21160

c.

35

2. In a class of 26 students, 12 are 16 years 3 months old, 8 are 16 years 9 months old and the remainder are 17 years old. What is the average age of the class (to the nearest month)?

a. 16 years 5 monthsb. 16 years 6 monthsc. 16 years 7 months

3. Make d the subject of the equation A = b( 11− d

− r ). d =

a.

b (d + 2 )Ar

b.

A + b ( r− 1 )A + br

c.

br (A − 2 )A

4. Make v the subject of the equation n =

π pr4 t8 vl . v =

a.

pr 4n8 πl

b.

8πl

pr4

c.

π pr4 t8nl

5. If

y4

+ 35

= 3 y2

− 1910 , y =

a. -2b. 2

c. 4

6. Solve the equations

2x3

− y4

− 712

= 0 and

3x4

− 310

= 2 y5

a. x = 2, y = 3b. x = 2.5, y = -1.5c. x 3, y = 2

7. Two points (2,5) and (4, -7) are plotted on a graph. What is the gradient of the line?

a. 0.166b. 6c. -6

8. What is the equation of the straight line graph that passes through the points (55, 7.5) and (20, 3.3)?

a. y = 0.9x -0.12b. y = 0.12x + 0.9c. y = 0.12x – 0.9

9. A right angle triangle has two sides of length 18cm and 30cm. What is the length of the third side?

a. 21cmb. 24cmc. 42cm

10.What is the value of 0.0654788 correct to 3 decimal places?

a 0.0000788b 0.0655c 0.065

11.The value of 3872.1365 correct to 3 significant figures is:

a 3870b 3872.137c 387