Shape Names

Diameter

Tangent

Chord

Radius

Line NamesPerpendicular means 900

Parallel means never touches

2d and 3d Shape Names

Cone

Pyramid

Cylinder

Cuboid

(Triangular) Prism

5 sides = pentagon

Number Names

20MultiplesLarger numbers20,40,60,80 etc

FactorsSmaller Numbers1,2,4,5,10,20

Square NumbersNumber x itself = square number

Prime NumbersOnly 2 numbers go into it1 and the number itselfEg 2,3,5,7,11

Number Words

˖ AddFind the sum ofTotal

˗ SubtractTake awayDifferFind the difference

xTimesMultiplyFind the product

Averages – the Median

M D N E I A Put in order, pick out the middle one

Averages – the Mean

MEAN MEAN

Add the numbers, then divide by how many there are

Perimeter

AREASplit into rectanglesArea of rectangle = length x widthAdd areas together

ESTIMATE OF THE MEAN

•2 extra columns•Use mid point of groups•Mid point x frequency•Big total divided by little total

SCATTER DIAGRAMS

•Plot the points•Line of best fit•Positive and negative correlation

CIRCLES

Area = pi x rad2

Circumference = pi x diameter

Leave in terms of pi means treat pi as a letter

PYTHAGORAS

• TAKE THE 2 NUMBERS

•SQUARE

•SQUARE

•ADD OR SUBTRACT

•SQUARE ROOT

FREQUENCY DIAGRAMS

Frequency diagram = bar chart

Frequency polygon = join midpoints of bar chart

CURVED AREAS

Count all the squares inside the shape.Include the ones on the edge that are half or more inside

ANGLE

MEASURED FROM THE NORTH LINE (North line must be on zero degrees on a protractor)

MEASURED IN A CLOCKWISE DIRECTION

MUST BE WRITTEN AS THREE FIGURES

N

Find the bearing of B from A

B

A

054°

BEARINGS