Adds two values together. Returns the result.
Returns the second string attached to the end of the first string. The nspire uses & for this instead
Adds value to every element of the list.
If both lists are the same size, this adds each element of one list to the matching element of the other list.
If both matrices are the same size, this adds each element of one matrix to the matching element of the other matrix.
This prompts for two numbers, than returns the sum of the two numbers.