Formulas and functions

Functions and FormulasModule 6 Lesson 2

Formulas

Formulas use cell addresses and operators to calculate

Four Basic Calculations

Add + =B4+B5Subtract - =B4-B5Divide / =B4/B5Multiply * =B4*B5

Formula Clues and Tips

1. Understand what the formula is asking for in regular math terms.

2. Identify the operator required

3. Identify the cell addresses required

4. Use the order of operations

5. ALWAYS start with an equal sign

Order of Operations?

1. Parentheses2. Exponents3. Multiplication4. Division5. Addition6. Subtraction

Please Excuse My Dear Aunt Sally

Formula Examples

Multiply H3 times C4

=H3*C4

Add C2 and C3

=C2+C3

Subtract D4 from C3

=C3-D4

Divide E3 by C1

=E3/C1

Formula Practice: You try it.1. Divide C7 by A2

2. Add A1 and A2

3. Subtract E5 from D4

4. Multiply B4 times E8

Write your answers on a scratch piece of paper, then

advance to the next

slide.

Formula Practice: Answers1. Divide C7 by A2

=C7/A2

2. Add A1 and A2

=A1+A2

3. Subtract E5 from D4

=D4-E5

4. Multiply B4 times E8

=B4*E8

More Formula Examples1. Add the range B2-B10

=B2+B3+B4+B5+B6+B7+B8+B9+B10

Start with the equal sign, then begin listing cell addresses beginning with B2 and ending with B10. Be sure to list all cell addresses in between. The operator for addition is +. You must use the operator to separate each cell address as shown

2. Add C6 through C10 then subtract C5=C6+C7+C8+C9+C10-C5

Start with the equal sign. To add C6 through C10, begin listing cell addresses beginning with C6 and ending with C10, separate each with a +. Then, use the subtraction operator – and C5.

More Formula ExamplesAdd A3 and A4 then divide by C10

=(A3+A4)/C10

Start with the equal sign. Remember your order of operations. If you want to ADD A3 and A4 THEN divide by C10, you must enclose A3+A4 in parentheses then divide by C10.

Find the average of D1 through D6=(D1+D2+D3+D4+D5+D6)/6

Start with the equal sign. Remember, to calculate an average, you must first add the numbers, then divide the sum by the number of items. Obeying order of operations, we must enclose our addition in parentheses so that the addition portion is completed first. Then divide by 6.

Formula Practice: You try it.1. Average B3 through B10

2. Add A1 and A2 then divide by B4

3. Subtract E5 from D4 then multiply by B6

4. Add B3 through G3

Write your answers on a scratch piece of paper, then

advance to the next

slide.

Formula Practice: Answers1. Average B3 through B10

=(B3+B4+B5+B6+B7+B8+B9+B10)/8

2. Add A1 and A2 then divide by B4

=(A1+A2)/B4

3. Subtract E5 from D4 then multiply by B6

=(D4-E5)*B6

4. Add B3 through G3

=B3+C3+D3+E3+F3+G3

What about those Functions?Functions are shortcut formulas that use

a shortcut word and a range of cells

Five Basic Functions Shortcut For Does

SUM addition add cells AVG average average cells MIN minimum find the least MAX maximumfind the greatest

COUNT count how many numbers

Function Clues and Tips

1. Understand what the formula is asking for in regular math terms.

2. Identify the shortcut word required

3. Identify the range of cells required

4. ALWAYS start with an equal sign

Anatomy of a Function

=SUM(A1:A12)

equalequal

shortcut word

range

Reads: equal the sum of the range A1 through A12

Identifying a Range

Range—a selected group of cells that form a rectangle

ex: (A1:D1)

Shown within parenthesis

(First cell : Last cell)

1. (A1:D1) 2. (A3:C3)

3. (A4:A6) 4. (A7:B7)

5. (C4:C10) 6. (D3:D9)

1.2.3.4.

5. 6.

NO SPACES

Function Practice: You try it.1. Average B3 through B10

2. Add A1 and A2 then divide by B4

3. Count the numbers from A6 to V6

4. Add B3 through G3

Write your answers on a scratch piece of paper, then

advance to the next

slide.

Function Practice: AnswersStart with equals, then your shortcut word, then the

range of cells within parentheses• Average B3 through B10

=AVG(B3:B10)

2. Add A1 and A2 then divide by B4

=SUM(A1:A2)/B4

3. Count the numbers from A6 to V6

=COUNT(A6:V6)

4. Add B3 through G3

=SUM(B3:G3)

Formulas v Functions

Formula Function

=

calculates

order of operations

cell addresses

operators

shortcut word

cell range

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