Pre-Algebra
Same calculators will be needed for eighth grade. These can be purchased at Walmart or Target and run about $15. We will also have them for sale during school registration in August.
![]()
Supplies for math: binder, perforated notebook, mechanical pencil (highly suggested and with refills), TI-30XII calculator
| Integer Rules | |
| Addition and Subtraction | Multiplication and Division |
| **Same signs you add | **Same signs is positive |
| **Different signs you subtract | **Different signs is negative |
When subtracting integers following same rules for adding (above). Only difference is when you have a minus and negative that are together, you need to change to a plus and then follow rules. Ex -5 - (-3) should change to -5 + 3. These are different signs, so you would subtract 5-3 which is 2 and 5 (without looking at positive or negative) is bigger and is a negative, so the answer is -2.