Maths Chapters 3.5,3.6,4,5 Nov 2017

Question 0

What is the sum of all exterior angles?

Answer 0

360

Question 1

Alternate angles are ……

Answer 1

Equal

Question 2

What equation do you use to find the interior angles of any polygon?

Answer 2

(n - 2) x 180

Question 3

Straight lines are …… degrees

Answer 3

180

Question 4

How do you find the mean?

Answer 4

Add up all numbers and divide by the amount of numbers

Question 5

How do you find the mode?

Answer 5

Find the most common number

Question 6

How do you find the median?

Answer 6

Arrange the numbers into size order and choose the middle number ( if there are two numbers in the middle add them together and divide by 2)

Question 7

What is the three letter pneumonic for dividing fractions?

Answer 7

KFC ( keep, flip, change)

e.g. 14/5 divided by 10/7 = 14/5 times by 7/10 = 98/50 Now simplify

Question 8

You have 150 doughnuts. You need to split them into the ratio 1:10:4 between you and your friends Tim and Tom. How many doughnuts does Tim get?

Answer 8

1 + 10 + 4 = 15

150/15 = 10

10 x 10 = 100

Tim gets 100 doughnuts

Question 9

What are the three trigonometry words?

Answer 9

Sin, Cos and Tan

Question 10

What two factors do you need when using Sin?

Answer 10

The opposite and hypotenuse

Question 11

What two factors do you need when using Cos?

Answer 11

The adjacent and hypotenuse

Question 12

What two factors do you need when using Tan?

Answer 12

The opposite and adjacent

Question 13

A game on steam is on a 25% sale. It now costs £54. What was its original price?

Answer 13

£54 = 75%

54 divided by 3 = 18 (25%)

18 x 4 = £72 (25% x 4 = 100%)

Question 14

What is the equation for Pythagoras’ theorem?

Answer 14

A squared + B squared = C squared