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In mathematical expressions, the standard order of operations is:
1. Parentheses and other grouping symbols
2. Exponents (powers)
3. Multiplication and Division - done in order from left to right
4. Addition and Subtraction - done in order from left to right

One easy way to memorize the order of operations is to use the mnemonic "Please excuse my dear Aunt Sally."

Some examples:
 50 - 2 x 6 {do the multiplication first} = 50 - 12 = 38 + 1 (4 + 3) x (5 - 4) {do the two sets of parentheses first} = 7 x 1 = 7 40 - (16 ÷ 2) x 4 + 1 {do the division first} = 40 - 8 x 4 + 1 {do the multiplication} = 40 - 32 + 1 = 9 11 + 4 x 32 - (6 + 5 x 2) {do the exponent and the multiplication inside the parentheses first} = 11 + 4 x 9 - (6+10) {do the multiplication and the addition inside the parentheses} = 11 + 36 - (16) = 31

Worksheets About the Order of Operations:
 Order of Operations WorksheetsSolve the equations, making sure to use the correct order of operations -- no exponents are used in these problems. Worksheet #1 or go to the answersWorksheet #2 or go to the answersWorksheet #3 or go to the answers.

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