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How to use order of operations while solving problems.

1.
Math Study Strategies

Math for Automotives

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Order of Operations Approx opening time

2 min at 56K

Remember to use the Order of Operations when you do calculations.

Think PEMDAS-or “Please excuse my dear Aunt Sally” - to use the

Order of Operations:

P stands for Parenthesis. Do operations in parenthesis first.

E stands for Exponents. Do all of these after any parenthesis.

M stands for Multiplication.

D stands for Division.

A stands for Addition.

S stands for Subtraction.

When solving problems involving the order of operations, remember

the following:

For more information about this and other math topics, come to the Math Lab 722-6300 x 6232. Caproiu & Hall, 2000

1. The parenthesis ( ) tell which operation to do the first. After working

inside the parenthesis, you must do multiplication and division before

addition and subtraction.

2. The braces { } show the next numbers to work with. Inside the braces,

multiply and divide before you add and subtract.

3. The brackets [ ] show the third group of numbers to work with. Again,

multiply and divide, then add and subtract.

After working in the parethesis, braces, and brackets, do the remaining

multiplication and division before addition and subtraction, from left to right.

There are two exceptions:

If the expression starts with division and then multiplication, and there is no

addition or subtraction sign between the multiplication and division, perform

division first and multiplication second.

27 ÷ 3 × 2 = 9 × 2 = 18

If the expression starts with subtraction and then addition, and there is no

multiplication or division sign between the addition and subtraction, perform

subtraction first and addition second.

8−5+2 = 3+2 = 5

Learning Center

Math for Automotives

Click Here for

Audio Version

Order of Operations Approx opening time

2 min at 56K

Remember to use the Order of Operations when you do calculations.

Think PEMDAS-or “Please excuse my dear Aunt Sally” - to use the

Order of Operations:

P stands for Parenthesis. Do operations in parenthesis first.

E stands for Exponents. Do all of these after any parenthesis.

M stands for Multiplication.

D stands for Division.

A stands for Addition.

S stands for Subtraction.

When solving problems involving the order of operations, remember

the following:

For more information about this and other math topics, come to the Math Lab 722-6300 x 6232. Caproiu & Hall, 2000

1. The parenthesis ( ) tell which operation to do the first. After working

inside the parenthesis, you must do multiplication and division before

addition and subtraction.

2. The braces { } show the next numbers to work with. Inside the braces,

multiply and divide before you add and subtract.

3. The brackets [ ] show the third group of numbers to work with. Again,

multiply and divide, then add and subtract.

After working in the parethesis, braces, and brackets, do the remaining

multiplication and division before addition and subtraction, from left to right.

There are two exceptions:

If the expression starts with division and then multiplication, and there is no

addition or subtraction sign between the multiplication and division, perform

division first and multiplication second.

27 ÷ 3 × 2 = 9 × 2 = 18

If the expression starts with subtraction and then addition, and there is no

multiplication or division sign between the addition and subtraction, perform

subtraction first and addition second.

8−5+2 = 3+2 = 5

Learning Center