GCSE Mathematics Paper 1

Different Words ADD Plus Total More than Sum of SUBTRACT Take away Minus Difference Less than

MULTIPLY Times Lots of Product DIVIDE Share Divisible by etc

Area & Perimeter Add up edges Answer in cm Area = Length x width Answer in cm 2

Area = HALF base x height ORBase x Height 2 Area of a Triangle Answer in cm 2

Area Units 100cm 1 m 2 100cm so 1m 2 = cm 2

Volume width height length Volume = length x width x height Units cm 3, m 3

“Percent” = out of 100 Percent without a calculator Find 10% by DIVIDING by 10 Then5% 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

DST D ST Distance Speed Time Be aware of units 2hrs 30 mins = 2.5 hours

Ratios total = ÷ 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

Averages Mean = sum of values total freq Medianmiddle 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 En lar gem e n t Rotation Reflection Translation Use the tracing paper! Careful of points of movement

Scatter Graphs x x x x x x x x x Correlation Positive Negative

Frequency Polygon Plot at the MIDPOINT and FREQ Normal 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 group

Probability Probability 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 = x 2

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