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GCSE
Mathematics
Paper 1
Different WordsADDPlusTotal
More thanSum of
SUBTRACTTake away
MinusDifferenceLess than
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 height
OR Base x Height 2
Area of a Triangle
Answer in cm2
Area Units
100cm
1 m2
100cm
so
1m2 = 10000 cm2
Volume
width
height
length
Volume = length x width x height
Units
cm3, m3
“Percent” = out of 100
Percent without a calculator
Find 10% by
DIVIDING by 10Then 5% half of 10%
30% 3 lots of 10%etc
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
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
Interior Angles
180º
360º
540º Add a side . . .
Add 180º
Angles
Exterior Angle of any shape
add up to 360º
Angles
180º
same size
Bearings
Measured clockwise from north
N
Three figures
e.g. 075º, 223º
AveragesMean = sum of values
total freq
Median middle value
(write in order first)
Mode most popular(Modal)
Range biggest - smallest
Algebra
Key Words
Solve what does x stand for?
(must include = in sum)
Factorise put INTO brackets
Transformations
Enlargement
Rotation
Reflection
Translation
Use the tracing paper!
Careful of points of movement
Scatter Graphs
x
x
x
x
x
x
x
x
xCorrelati
on
Positive
Negative
Frequency Polygon
Plot at the
MIDPOINT
and
FREQNormal scale going up in
5’s, 10’s, 20’s etc
NOT groups
Grouped Frequency Diagram
‘Bar graph’
• Normal scale
• Bars as wide as the group0
5
10
15
20
25
30
10 20 30 40 500 10 20 30 40 50
ProbabilityProbability of two events
i.e. two sixes on a pair of dice
Prob event 1 x prob event 2
i.e. 1/6 x 1/6 = 1/36
Probability
Table of values
Expected number of winners . . .
Probability x number in
Q
Graphs
y = -x
y = x
y = x2
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