Year 8 Maths exam review 2

Question 1

A car travels at a speed of 105km/hr. How many km in 2 hours and 30 mins to the nearest km?

Accepted Answer

263km

Question 2

What is the median of: 3, 5, 8, 9, 2, 4

Accepted Answer

4.5

Question 3

Substitute a= -2 in 5a - 10

Accepted Answer

-20

Question 4

What is an example of a random sample?

Accepted Answer

50 students drawn from a hat to take a survey

Question 5

What is the mode of : 3, 5, 6, 3, 2, 1, 0, 0, 3, 0

Accepted Answer

0, 3

Question 6

In the frequency table, what is the total number of scores?

Accepted Answer

20

Question 7

Find the missing angle

Accepted Answer

35°

Question 8

Solve for x in 5x2 /10 = 8

Accepted Answer

4

Question 9

Factorize 16ab - 28a2

Accepted Answer

4a (4b - 7a)

Question 10

In the frequency table, find the probability of obtaining a number less than 7?

Accepted Answer

2/5, 8/20

Question 11

What is the probability of getting an even number if a die is thrown in simplest terms?

Accepted Answer

1/2

Question 12

This is an example of a

Accepted Answer

Histogram

Question 13

In the frequency table, what is the probability of obtaining a 5?

Accepted Answer

2/20, 1/10

Question 14

What is the mean of: 10, 11, 9, 6, 15, 11

Accepted Answer

10.3

Question 15

What is the coordinates of B?

Accepted Answer

B (0,2)

Question 16

The 2 triangles are congruent because of

Accepted Answer

RHS (right angle, hypotenuse, side)

Question 17

What is the median of: 5, 9, 1, 3, 4, 0, 4

Accepted Answer

4

Question 18

-10x + 2y +2x

Accepted Answer

2y - 8x

Question 19

A box of 2 red, 5 blue and 1 white balls, find the probability of getting a red or white ball?

Accepted Answer

3/8

Question 20

Expand 2x (10 - 3x)

Accepted Answer

20x -6x2

Questions 20