Here are the most requested Math tutorials:
Multi-digit Addition: Click Here to see Example
Multi-digit Subtraction: Click Here to see Example
Long Division: Click Here to see Example
Here is a list of numeracy terms which you may find useful.
Acute Angle
- an angle that measures between 0 and 90 degrees.
Addition (Click Here to see Example)
- the process of calculating the total of two or more numbers.
Apex
- the vertex (point) that is furthest from the base.
Area
- the size of a surface
- the space inside a boundary
Array
- objects or numbers arranged in rows and columns
Average
- is one score that tries to show the 'middle' of a group of scores
- to find the average add all the scores and divide by how many scores there are
Bisect
- to divide something into two equal parts
Capacity
- how much something holds
- is measured in millilitres (mL), litres (L) and kilolitres (kL)
Circumference
- the curved edge of a circle
Classify
- arrange in groups according to attributes
Common Denominator
- a denominator that all fractions in a group can be changed to
Composite Number
- a number which has more than two factors
Coordinates
- two numbers (or letters) which tell position on a grid
- the horizontal number is written before the vertical number
- they are written in bracketswith a comma between them
Cross-section
- what you see when an object is cut through
Cubed Number
- a number formed when another number is multiplied by itself three times
Diagonal
- a straight line that is drawn inside a shape from one vertex to another
Diameter
- a straight line drawn from one point on the circumference of a circle through the centre to another point on the circumference of the circle
Displacement
- how much water rises when an object is placed in it
Divisor
- the number used to divide by
Edge
- where two faces meet
Ellipse
- a curved shape like a squashed circle
Equilateral Triangle
- a triangle which has three equal sides
- its angles are all 60 degrees
Equivalent
- having the same value
Equivalent Factions
- factions which have the same value
Estimate
- to make a close guess
- it is never and exact answer
Even Number
- a whole number that can be divided exactly by 2
- ends in 0, 2, 4, 6 or 8
Factor
- a whole number that divides exactly into another number
Fraction
- a part of a group or of a whole number
Geometry
- a part of mathematics which deals with 2D and 3D space
- shapes, objects, size, position
Gross
- twelve dozen or 144
Horizontal
- parallel to the horizon
- side to side
Hypotenuse
- the side opposite the right angle in a right-angled triangle
Improper Fraction
- a fraction which has a numerator bigger than its denominator
Intersect
- to cut across each other
Isosceles Triangle
- has two equal sides
- the angles opposite the equal sides are also equal
Jump Strategy
- an aid to mental addition or subtraction
- jump by parts of the number
Long Division (Click Here to see Example)
- arithmetical division in which the divisor has two or more figures, and a series of workings is made as successive groups of digits of the dividend are divided by the divisor, to avoid excessive mental calculation.
Lowest Common Denominator
- the lowest number that can be used for the denominator of a group of fractions
Mass
- matter in an object
- is measured in grams, kilograms, tonnes
Mean
- another name for average
Median
- the middle score (or scores) when a set of scores are written in order of size
Millennium
- a thousand years
Minimum
- the least amount
Mixed Number
- has a whole number and a proper fraction
Multiple
- the product of two or more factors
Net
- a flat pattern that can be used to make a 3D object
Notation
- a special way of writing numbers or mathematical expressions
Numeral
- a symbol (or group of symbols) that stand of a number
Numerator
- the top number in a fraction
- tells us how many parts we have
Oblong
- another name for a rectangle that is not a square
Obtuse Angle
- is an angle larger than a right angle but smaller than a straight angle
- measures between 90 and 180 degrees
Ordinal Number
- tells position
- 1st, 2nd, 3rd, 4th, 5th etc.
Parallel Lines
- are two or more lines that will never meet no matter how far they are drawn
Perimeter
- the distance around the outside of a shape
- add the lengths of all the sides
Perpendicular
- at right angles to the horizon
Perpendicular Lines
- lines that intersect at right angles
Plane Shape
- a 2D shape that is drawn on a flat surface
Polygon
- a 2D shape with three or more sides and angles
- name comes from Greek words meaning many and angle
Prime Factor
- a factor that is a prime number
Prime Number
- a number that has only two factors: itself and one
Prism
- a 3D object
- it has two identical ends which give the prism its name
- all other faces are rectangles
Probability
- the chances of something happening
- words such as possible, certain, unlikely, sure, impossible, most likely etc. are used for probability
Product
- the answer when two or more numbers aere multiplied
Proper Fraction
- the numerator is smaller than the denominator
Protractor
- an instrument used the measure or draw angles
Quadrant
- a quarter of a circle
- formed by two radii drawn at right angles to each other
Quadrilateral
- a polygon with four straight sides
Quotient
- the answer when one number is divided by another
Radius
- the distance from the centre of a circle to the circumference
Reflex Angle
- an angle that measures between 180 and 360 degrees
Remainder
- the amount left over when one number cannot be divided exactly by another
Right Angle
- an angle that measures 90 degrees
Scalene Triangle
- a triangle that has sides of different lengths
Sector
- a part of a circle bounded by two radii and an arc
Segment
- a part of a circle bounded by a chord and an arc
Sequence
- a list of numbers or objects which are in a special order
Sphere
-a 3D object shaped like a ball
Square Number
- when a number is multiplied by itself the answer is a square number
- a square number can always form a square pattern
Square Root
- of a given number is the number that when multiplied by itself, makes the given number
Straight Angle
- an angle which looks like a straight line
- always measures 180 degrees (2 right angles)
Subtract (Click Here to see Example)
- take away a number or amount from another to calculate the difference.
Symbol
- a sign or letter used instead of words eg plus, minus, equals etc.
Symmetry
- when one half of a shape is a reflection of the other half
- when folded on an axis of symmetry the two halves fit exactly on top of each other
Table
- numbers or quantities arranged in rows and columns
Tangram
- a traditional Chinese puzzle
- a square cut into one parallelogram, one square and five triangles
Three-Dimensional
- an object that has height, width and depth
Tonne
- a unit of mass
- 1000 kilograms = 1 tonne
- abbreviation is (t)
Two-Dimensional
- a shape that only has two dimensions; length and width (height)
Vertical
- at right angles to the horizon
Volume
- the amount of space an object occupies