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# Formulas and functions

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### Formulas and functions

1. 1. Functions and Formulas Module 6 Lesson 2
2. 2. Formulas <ul><li>Formulas use cell addresses and operators to calculate </li></ul><ul><li>Four Basic Calculations </li></ul><ul><li>Add + =B4+B5 </li></ul><ul><li>Subtract - =B4-B5 </li></ul><ul><li>Divide / =B4/B5 </li></ul><ul><li>Multiply * =B4*B5 </li></ul>
3. 3. Formula Clues and Tips <ul><li>Understand what the formula is asking for in regular math terms. </li></ul><ul><li>Identify the operator required </li></ul><ul><li>Identify the cell addresses required </li></ul><ul><li>Use the order of operations </li></ul><ul><li>ALWAYS start with an equal sign </li></ul>
4. 4. Order of Operations? <ul><li>Parentheses </li></ul><ul><li>Exponents </li></ul><ul><li>Multiplication </li></ul><ul><li>Division </li></ul><ul><li>Addition </li></ul><ul><li>Subtraction </li></ul><ul><li>Please Excuse My Dear Aunt Sally </li></ul>
5. 5. Formula Examples <ul><li>Multiply H3 times C4 </li></ul><ul><ul><li>=H3*C4 </li></ul></ul><ul><li>Add C2 and C3 </li></ul><ul><ul><li>=C2+C3 </li></ul></ul><ul><li>Subtract D4 from C3 </li></ul><ul><ul><li>=C3-D4 </li></ul></ul><ul><li>Divide E3 by C1 </li></ul><ul><ul><li>=E3/C1 </li></ul></ul>
6. 6. Formula Practice: You try it. <ul><li>Divide C7 by A2 </li></ul><ul><li>Add A1 and A2 </li></ul><ul><li>Subtract E5 from D4 </li></ul><ul><li>Multiply B4 times E8 </li></ul>Write your answers on a scratch piece of paper, then advance to the next slide.
7. 7. Formula Practice: Answers <ul><li>Divide C7 by A2 </li></ul><ul><li>=C7/A2 </li></ul><ul><li>Add A1 and A2 </li></ul><ul><ul><li>=A1+A2 </li></ul></ul><ul><li>Subtract E5 from D4 </li></ul><ul><ul><li>=D4-E5 </li></ul></ul><ul><li>Multiply B4 times E8 </li></ul><ul><ul><li>=B4*E8 </li></ul></ul>