These guided notes provide a review of operations involving positive and negatives. I provided some scenarios to help students think about what operations involving negatives actually mean so they can start to check how reasonable their answers are during practice. Guided examples are included. This can be used to introduce the concepts or as a review of what has already been learned.
Here's a link to a leveled practice involving positives/negatives along with substitution: https://www.teacherspayteachers.com/Product/Substitution-Spicy-Practice-2403514