Maths DictionaryCreated by Skills for Working Life

Gravesend

Fractions

A fraction is a part of a whole

This shows 1 (a whole)

This shows a circle in ½ (half)

This shows a ¼ (quarter) of a square

This shows ¾ (three quarters) of a circle

Maria

1. This shows 1/3 (one third) of a square

Maria Pacey

This shows 2/3 (two thirds) of a square

Maria

Counting squares

A square centimetre is the area within a square with sides of length , as shown above.

We say that it has an area of ( squared).

This rectangle contains six squares. Each of the squares has an area of , so the area of the rectangle is .

Area

Peter

The area inside the square you count. If each side of a tile is 1 unit in lengthHow many different rectangles can you build with on area of 12 square units?

Peter

Two-Dimensional A shape that only has two dimensions (such as width

and height) and no thickness.

Squares, Circles, Triangles, etc. are two dimensional objects.

Known as "2D" shapes

Alex

2D Shapes

Triangle - 3 Sides

Square - 4 Sides

Pentagon - 5 Sides

Hexagon - 6 sides

Heptagon - 7 Sides

Octagon - 8 Sides

Alex

More 2D shapes

Nonagon - 9 Sides

Decagon - 10 Sides

The word Quadrilateral means 4 sided shape

Quadrilateral

Any 4 sided 2D shape

Rectangle - 4 Sides

All right angles

Alex

Circle - 1 Side

Ellipse - 1 Side

More 2 D ShapesAlex

Money

You need money to buy food and drink. Most people work to get money.

These are the coins/notes we use in England.

1p

2p

5p

Maria

Money Continued

10p

20p

50p£1.00

£2.00

Maria

£5 £10

Money Continued

£20£50

Maria

• The basic idea of multiplication is repeated

addition• For example 5 x

3=5+5+5=15 or 3 x 5 = 3+3+3+3+3=15

MultiplicationJJ

Using a Protractor

This is a protractor, it helps you measure angles (in degrees):

Alex

A trapezium is a flat shape with four sides where two of the sides are parallel.

Chloe

Sphere A sphere is a round 3D shape and it has no edges or verticals and it is a perfectly symmetrical.This is the shape of Planet Earth and the rest of the solar system.Chloe

Double and Half  Double means x 2      Example   Double 4 = 8        double 6= 12       double 1,000=2000   double 3,000=6000       double 10,000= 20,000   Half means ÷ by 2  Example   Half of 4 = 2                   half of 6 =3           half of 10=5 Half of 20= 10                 half of 2=1         half of 8=4

Maria Pacey