Glossary

Binary Operators   The Binary Operators are   +,  -,  x ,  and  

Commutative   An operation is commutative if the order does not matter. Addition and multiplication are commutative, subtraction and division are not.

Factor   A factor of a number is a number that divides that number exactly.

Integers   (with the 'g' pronounced like a 'j') includes the whole numbers, but extends the range to include negative numbers as well, i.e

.... -3, -2, -1, 0, 1, 2, 3, .........

Isosceles Triangle   has two equal sides, and therfore two equal angles.

Linear Equations  

Prime Numbers   are numbers with no factors other than 1 and the number itself.

Rational Numbers   are numbers that can be represented as a fraction. Integers come under this classification because, for example

12 = 12 / 1

Reciprocal   The Reciprocal of a number is given by

reciprocal = 1 / number

For example :

The reciprocal of 3 is 1/3

The reciprocal of 0.362 = 1 / 0.362 = 2.762