ExponentAlso known as 'index' or 'power'. A number, positioned above and to the right of another, indicating repeated multiplication. Exponents may be fractional or negative. Examples: 81/3 = 2, which is the same as the cube root of 8. |
ExpressionA mathematical form expressed symbolically. Examples: 7 + 3; a2 + b2. An expression is different from an equation in that it doesn't have an equals sign =. |
FaceIn geometry, one of the flat surfaces of a solid shape. Example: a cube has six faces. |
FactorWhen a number, or polynomial in algebra, can be expressed as the product of two numbers or polynomials, these are factors of the first. Expressing a number of polynomial as a product of its factors is known as factorising. Example: 1, 2, 3, 4, 6 and 12 are all factors of 12. Example: (x-1) and (x+4) are factors of (x2 + 3x - 4). |
FootSymbol: ft. An imperial measure of length. 1 foot = 12 inches. 3 feet = 1 yard. 1 foot is approximately 30 cm. Imperial measurements are rarely used in modern times. |
FormulaAn equation linking sets of physical variables, and allowing them to be evaluated, i.e. allowing their value to be found using other variables. Plural: formulae. |
FractionThe result of dividing one integer by a second integer, which must be non-zero. The dividend (number being divided) is the on the numerator (top of the fraction) and the non-zero divisor is on the denominator (bottom of the fraction). Example: 1 divided by 3 is written as 1/3. |
Frequency TableA table for a set of observations showing how frequently each event or quantity occurs. |
GallonSymbol: gal. An imperial measure of volume or capacity, equal to the volume occupied by ten pounds of distilled water. In the imperial system, 1 gallon = 4 quarts = 8 pints. One gallon is just over 4.5 litres. Imperial units are rarely used in modern times. |
GeometryThe aspect of mathematics concerned with the properties of space and figures or shapes in space. |