This video will show you how to:
Use simple mathematical operators for calculations in your code
Use more complex functions like square and Square root
How and when to use the double data type
How to validate the data using a try catch statement
Going further
Can you make your calculator divide and multiply too?
Can you add square and square root functions (apply them to the top number and hide the bottom number)?
Can you make buttons for SIN COS and TAN? (hint: VB uses radians rather than degrees, so use the Internet to find a way to convert radians to degrees)