1. Digital Communication Systems
Create and edit spreadsheets using labels, values, and formulas.

2. Formulas . . . Four Basic Calculations
A tool for making calculations with the numbers on your spreadsheet
Four Basic Calculations
Add + A1+B1
Subtract - C3-D4
Multiply * B6*A2
Divide / F1/F3

3. Order of Operations
You can also use parenthesis in your calculations where the order of operations is completed first:
(A1+A2)*(B7/D4)
(7+11)*(4/2)
18*2 36

4. Function-Shortcut formula
SUM function will add all numbers in a range
Range=(B4:B8)
Function

5. Function-Shortcut formula
Average (avg) function averages all numbers in a range
Range
Function