Year 8 Exam Revision

Integers and Indicies

100

-5 - 7 =?

-12

200

2² x 2⁵ =?

2⁷

300

x⁰ =?

1

400

(x²)⁴ =?

x⁸

500

What is 8x8x8x8x8x8x8 in index form?

8⁷

Fractions, Percentages and Decimals

100

What is 0.25 as a percentage?

25% 

200

Convert 4/5 to a decimal (two decimal places).

0.80

300

What is 0.52 as a fraction? (Simplify for full points)

52/100 = 13/25

400

Calculate 24% of 82 (two decimal places).

19.68

500

Calculate the percentage mark up on an item with a cost price of $52, but the store sells it for $83.

59.6%

Algebra and Linear

100

What are the like terms in this expression? 

2x + 8y - 5x + 5x² - 3 

2x and 5x

200

Simplify this expression: 

8a + 3b - 7a + 2b + 1

a + 5b + 1

300

Expand this expression: 

2(x - 7)

2x - 14

400

Factorise this expression

64x + 8

8(8x+1)

500

Expand and simplify: 

7(x + 2) + (6x - 4)

13x + 10

Measurement

100

What is the formula to caluclate the area of a parallelogram?

b x h

200

Calculate the radius of a circle that has a diameter of 8cm.

4cm

300

Calculate the circumference of a circle that has a diameter of 10cm

31.42 cm

400

Calculate the area of a circle with a diameter of 6cm

28.27cm²

500

Calculate the volume of a triangular prism that has a length of 36mm, width of 16mm and a height of 18mm. Now convert this measurement to cm. 

10368mm³ = 1036.8cm3

Statistics

100

Explain what the mean, median and mode is.

Mean - the average

Median - middle value in an ordered set

Mode - most common number

200

What is the median of this data set: 

6, 9, 1, 1 , 4, 10, 12, 7

6.5

300

Calculate the mean of this data set: 

3, 8, 10, 15, 8, 8, 4, 2, 1 

6.55 or 6.6

400

To find out what 8PATASH's favourite subject is, Miss Wood surveys 10 students by pulling their name out of a hat. What type of sampling is this?

Random Sampling

500

How would a high outlier affect the mean?

Increase the mean