gcse mathematics paper 2 the final step!!!. these are calculators!!!
TRANSCRIPT
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