Study Guide For Quiz WED

Hey guys, here are a few things to remember for your quiz tomorrow. The quiz will cover:

1) Order of operations (PEMDAS) - don't forget that multiplying and dividing are on the same level, and are completed from left to right; same thing for addition and subtraction - they're on the same level and are completed from left to right.

2) Evaluating expressions (just remember to substitute the given value for a variable and then use your order of operations to solve!)

3) Integers and absolute value
- Remember, as you go left on the number line, the value decreases; as you travel right, the value increases.
- Absolute values are always positive - remember, absolute value is the distance of a given number from zero (on the number line)

4) Adding and subtracting integers
- Study your notes for the rules!
- The tricky one for adding integers is when they have different signs. Just remember to find the difference of their absolute values and then keep the sign of the number with the greatest absolute value.
- When subtracting, use the KFC method (keep, flip, change) and remember that once you've turned that subtraction problem into an addition problem, the original subtraction problem disappears!

*You will also be given one question that will ask you to write a variable expression to represent a word phrase. Look back through section 1-1 to review!