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 Depdendent Variable

 Number of equations to solve: 23456789
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 Dependent Variable

 Number of inequalities to solve: 23456789
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# Fractions

Sometimes a mathematical equation requires more than one operation. It may be necessary to add, subtract, multiply and divide several numbers to answer one question. The Order of Operations is a set of rules that determine the order in which different operations are performed. Apply the rules outlined below.

Rules of Arithmetic Operations

Rule 1

If the operations are only addition and subtraction (+, –), do them from left to right.

Example:

Rule 2

If the operations are only multiplication and division (x, Ã·), do them from left to right.

Example:

Multiply . Then divide the answer by .

Rule 3

If there is a mixture of addition, subtraction, multiplication and division (+, –, x, Ã·), do the multiplication and division before the addition and subtraction.

Example:

Divide . Then subtract the answer from .

Rule 4

If there are brackets, do the operations inside brackets first.

Example:

First, add all the fractions inside the brackets. Then multiply the answer by . Finally, subtract from that answer.