## Mathematics mock exam questions and answers for Jss3

Here are 20 mathematics questions suitable for a JSS3 mock exam, along with options and answers:

What is the value of 5 + 7?

a) 11

b) 12

c) 13

d) 14

Answer: b) 12

If x = 3 and y = 4, what is the value of 2x + 3y?

a) 14

b) 17

c) 18

d) 19

Answer: c) 18

If a square has a side length of 6 cm, what is its area?

a) 24 sq cm

b) 30 sq cm

c) 36 sq cm

d) 42 sq cm

Answer: c) 36 sq cm

Solve for x in the equation 2x - 5 = 7.

a) 1

b) 3

c) 6

d) 12

Answer: b) 3

What is the next number in the sequence: 2, 4, 8, 16, ...?

a) 24

b) 32

c) 64

d) 128

Answer: c) 64

If a right-angled triangle has one leg of length 3 cm and the other leg of length 4 cm, what is the length of the hypotenuse?

a) 5 cm

b) 6 cm

c) 7 cm

d) 8 cm

Answer: a) 5 cm

What is the perimeter of a rectangle with a length of 10 meters and a width of 5 meters?

a) 20 meters

b) 25 meters

c) 30 meters

d) 35 meters

Answer: c) 30 meters

If the sum of two angles is 90 degrees and one angle is 45 degrees, what is the measure of the other angle?

a) 30 degrees

b) 45 degrees

c) 60 degrees

d) 90 degrees

Answer: c) 60 degrees

Simplify: 4/5 + 3/10.

a) 7/10

b) 14/15

c) 3/2

d) 1/20

Answer: a) 7/10

What is the value of 8 squared (8^2)?

a) 16

b) 64

c) 128

d) 256

Answer: b) 64

If a car travels at a speed of 60 kilometers per hour, how far will it travel in 3 hours?

a) 120 km

b) 150 km

c) 180 km

d) 240 km

Answer: c) 180 km

If 3x = 15, what is the value of x?

a) 5

b) 7

c) 10

d) 15

Answer: a) 5

Solve the equation: 2(x + 4) = 18.

a) 5

b) 7

c) 9

d) 11

Answer: c) 9

What is the area of a circle with a radius of 6 cm? (Use π ≈ 3.14)

a) 9.42 sq cm

b) 18.84 sq cm

c) 28.26 sq cm

d) 37.68 sq cm

Answer: b) 18.84 sq cm

If the product of two numbers is 24 and their sum is 10, what are the two numbers?

a) 2 and 8

b) 3 and 7

c) 4 and 6

d) 5 and 5

Answer: b) 3 and 7

If a book costs $20 and is on sale for 15% off, what is the sale price?

a) $17

b) $18

c) $19

d) $21

Answer: a) $17

What is the LCM (Least Common Multiple) of 6 and 8?

a) 12

b) 18

c) 24

d) 48

Answer: c) 24

Solve for y: 2y/3 = 8.

a) 12

b) 10

c) 6

d) 4

Answer: a) 12

A box contains 5 red marbles, 3 blue marbles, and 4 green marbles. If a marble is chosen at random, what is the probability of selecting a blue marble?

a) 1/4

b) 3/12

c) 1/3

d) 3/10

Answer: c) 1/3

If the perimeter of a regular hexagon is 36 cm, what is the length of each side?

a) 4 cm

b) 5 cm

c) 6 cm

d) 7 cm

Answer: c) 6 cm

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