Spiral Review Algebra I Skills. Gradually increasing in difficulty:1. Reducing Fractions 2. Adding Fractions (same and different denominators) 3. Subtracting Fractions (same and different denominators) 4. Sum, Difference, Product & Quotient of positive & negative integers 5. Simplifying Using Order of Operations 6. Solving Multi-Step Equations (Variable on one side, or both sides of the equation!) 7. Identify the slope (equation, graph & table) 8. Identify the y-intercepts (equation, grap