Amsco Integrated Algebra I: Order of Operations
 This is a free lesson from our course in Amsco's Integrated Algebra

 This lesson explains basic concepts of the order of operations, taking forward the leanings earlier about binary operations, factors of a number, prime number, base, and exponent. When a numerical expression involves two or more different operations, we need to agree on the order in which they are performed. The expressions with grouping symbols-say parentheses ( ), are simplified always performing the operations within parentheses first and then follow the correct order of operations (MDAS).(More text below video...)
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 (Continued from above) The procedure is: • Simplify any numerical expressions within parentheses or within other grouping symbols, starting with the innermost. • Simplify any powers. • Do all multiplications and divisions in order from left to right. • Do all additions and subtractions in order from left to right. For example: if you evaluate 3 + 6 x (5 + 4) ÷ 3 - 7 using the order of operations, the recommended steps are: 3 + 6 x (5 + 4) ÷ 3 – 7 = 3 + 6 x 9 ÷ 3 - 7 Parentheses 3+ 6 x 9 ÷ 3 - 7 = 3 + 54 ÷ 3 - 7 Multiplication 3 + 54 ÷ 3 - 7 = 3 + 18 - 7 Division 3 + 18 - 7 = 21 - 7 Addition 21 - 7 = 14 Subtraction The video above will explain in detail with the help of several examples.

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