MATH YEAR 8

Algebra

100

Solve 2x = 42

21

200

Solve 5x - 1 = 19

4

300

Factorise 12x - 30

6 (2x - 5)

400

Simplify 2(x -5) - 3(x - 11)

-1x + 23

500

Solve 3(x+3)/4 + 7 = 13

5

Arithmetic

100

20% of 500

100

200

15% of 150

22.5

300

10% of what number will be 6.

60

400

If you deposit $ 1500 for 3 years at a rate of 6% per year, what is the simple interest earned?

$ 270

500

If a loan of $ 4000 is compounded annually at a rate of 5%, what is the total amount to be repaid at the end of 2 years?

$ 4410

Shapes

100

What is a 8-sided polygon called?

Octagon

200

A regular polygon with 3 sides is called....

EQUILATERAL triangle.

300

The interior angles of a hexagon add up to........

720

400

The measure of each interior angle of a regular nonagon is ....

140

500

The interior angles of a pentagon are in the ratio  2:3:3:2:2. Find the measure of the largest angle.

135

Straight Lines

100

What is the general equation of a straight line

y=mx + c

200

What is the gradient of the line y= 2x - 5

2

300

What is the y-intercept of the line 2y - x = 15

7.5

400

What is the gradient of the line 2x - 4y = 10

1/2

500

what is the gradient of a line joining (2,6) and (4, 9)

1.5

Number Patterns

100

Continue the pattern: 24, 29, 34, 39, .....

44

200

Continue the pattern: 5, 15, 45, 135, ....

405

300

Continue the pattern: 44, 46, 50, 56, 64, ....

74

400

What is the nth term of the sequence: 22, 34, 46, 58, ...

12n + 10

500

A sequence is given below:

-2, 4, 10, 16, 22.....

At what position will 82 appear in this sequence?

15th position