Final answer:
To calculate sum and difference on a TI-83+ or TI-84 calculator, input numbers into lists and subtract them for difference, or add them directly for the sum.
Step-by-step explanation:
To calculate the sum and difference of any two numbers using a TI-83+ or TI-84 calculator, you have two options. For the sum, you would simply add the two numbers directly. However, for the difference, you could take one of two approaches:
- Calculate the differences manually (subtract the second number from the first) and then input those differences into a list.
- Input the two sets of numbers into separate lists (e.g., after data in the first list and before data in the second list). Then, you would create a third list where you will compute the difference by subtracting the second list from the first list. To do this, select the third list, arrow up to the name, and enter1st list name - 2nd list name. The calculator will perform the subtraction and display the differences in the third list.
Remember, for the sum, simply use the '+' key to add the two numbers together directly on the calculator.