GCSE

Mathematics

Paper 2

The Final Step!!!

These are calculators!!!

.

MULTIPLY

TimesLots ofProduct

DIVIDE

ShareDivisible by

3 5 2 8

1 7 6

2 1

180

2 90

2 45

etc

Area & Perimeter

Add up edges

Answer in cm

Area = Length x width

Answer in cm2

Area = HALF base x heightOR Base x Height

2

AREA

Answer in cm2

Circle

Circumference Area

x d x r2

Volume

width

height

length

Volume = length x width x height

Units

cm3, m3

DSTD

S TDistance

Speed Time

Be aware of units

2hrs 30 mins = 2.5 hours

Ratios

total = 10

450 ÷ 10 = 45

2 parts 2 x 45 = 90 etc

Share £450 in ratio 2:3:5

Fraction of …‘ Divide by bottom and times by

top’

1/7 of … Divide amount by 7

3/7 of … Divide amount by 7 and times by 3

“Percent” out of 100Percent with a calculator

% x amount 100

EG: 36% of £156

36 x 156100

Interest

Simple

Find % x number of years

Compound

Interest on interest

Angles

180º

same size

Bearings

Measured clockwise from north

N

Three figures

e.g. 075º, 223º

Transformations

Rotation

Translation Use the tracing paper!

Careful of points of movement

Probability

Table of values

Expected number of winners . . .

Probability x number in

Q

GROUPED FREQ Diagram

‘Bar graph’

• Normal scale• Bars as wide

as the group

0

5

10

15

20

25

30

10 20 30 40 500 10 20 30 40 50

FREQUENCY POLYGON

Plot at the

MIDPOINT

and

FREQ

Normal scale going up in 5, 10, 20 etc

NOT groups

Mean

Mean = sum of values total freq

Grouped datasum of MIDPOINT x freq

total freq

Scatter Graphs

x

x

x

x

x

x

x

x

xCorrelati

on

Positive

Negative

Graphs

y = -x

y = x

y = x2

PythagorasSide lengths only

Hypotenuse

‘longest side’

a

b

c

c2 = a2 + b2

Square itSquare itAdd ‘emSquare root it

Read every question carefully If you can do a question,

Do it correctly!

If struggling with a question, go onto the next and come back

If time, check through each answer

Good Luck