Basic Definitions Relating to Operations Operations are actions or procedures which produce a resulting value from one or more input values. Binary operations involve two quantities and include addition, subtraction, multiplication, division and exponentiation. Unary operations only involve one quantity such as negation, absolute value or trigonometric functions. Fundamental operations of Algebra are addition, subtraction, multiplication and division. Addition is an operation indicated with + sign. The result of addition of two or more numbers (addends)is called their Sum Subtraction is an operation indicated with a - sign. The result of a subtraction is called the difference. Multiplication is an operation with * or dot or X or variables can simply be written together. The cross (X) is not normally used with literal numbers because it can be confused with the variable x. 5xy means 5 times x times y and is read 5 x, y. The result of a multiplication is called the product and the numbers that are multiplied together are the factors. Division is an operation indicated by viniculum, slash or an obelus (÷) which is also know as a division sign. To divide x by y, where y is not zero, means to find a number z such that x = yz. x is called the dividend, y is called the divisor and z is called the quotient. A Power is an operation indicated by a superscipt. A Root is an operation indicated by the radical sign with a viniculum over the radicand. Return to Top