Date post: | 13-Dec-2015 |
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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