This is a list of some maths terms with their definition and an example. (More will be added soon)
|Acute Angle||An angle that measures less than 90o.|
|Area||The amount of space taken up by a 2D shape or surface. Area is measured in square units for example cm2 or m2.|
|Array||A pictorial representation (rows or dots) to help children to understand multiplication and division.|
BIDMAS or BODMAS
The order to complete mathematical calculations.
The measurement all the way around the outside edge of a circle.
|Coordinates||Numbers that give you a position on a grid marked by how far along they are on the x axis and how far up or down they are on the y axis. Always write the x axis value first.|
|Denominator||The bottom number of a fraction that tells you how many parts a shape or amount has been divided equally into.|
|Diameter||The length of a straight line through the centre of a circle from one point on the circumference to another point.|
|Divisor||The number you are dividing by.|
A triangle where all sides are the same length and all angles are the same size.
|Exchanging||Converting from one place value to another - a term used instead of "carrying" in addition and "borrowing" in subtraction.|
|Factor||A whole number which will divide exactly into another number.|
|Highest Common Factor (HCF)||The highest number that two or more whole numbers is divisible by. It could be easier if you listed all the factors of each number.|
|Index (Plural: Indices)||Also know as "power", the index shows how many times the number is used in a multiplication.|
|Isosceles Triangle||Triangles that have 2 sides of equal length and 2 angles of equal size.|
|Lowest Common Multiple (LCM)||The lowest number that is a multiple of two or more numbers.|
|Mean||An average measure that is calculated by adding all the values in a data set together and dividing it by the number of values there are.|
|Median||An average measure that shows the middle value when a group of numbers is arranged in order of size.|
|Mode||An average measure that shows the value which appears most frequently in a set of data.|
|Multiple||A number that can be divided by a whole number without remainders.|
|Number Bonds||Pairs of numbers that add up to made a certain number.|
|Numerator||The number on the top of a fraction that tells you how many parts you have.|
|Obtuse Angle||An angle that measures more than 90o but less than 180o.|
|Partitioning||Expanding or breaking down a number into the individual values of each digit - this helps with understanding place value.|
The distance measured around the outside of a 2D shape.
The value of a digit within a number.
|Prime Number||Numbers that only have two factors which are 1 and the number itself.|
|Radius||The measurement of a straight line from the centre of a circle to any point on the circumference of a circle.|
|Range||An average measure that shows the difference between the highest and the lowest value in a data set.|
|Ratio||A comparison between the amounts of different things.|
|Reflex Angle||An angle that measures more than 180o but less than 360o.|
An angle that measures exactly 90o.
|Scalene Triangle||A triangle where all the sides are of different lengths and all the angles are different values but one of the angles measures more than 90o.|
|Square Number||The value when a number is multiplied by itself.|
The horizontal axis on a graph or grid.
Remember: "X is a-cross".
|y axis||The vertical axis on a graph or grid.|