1. Reason abstractly and quantitatively. 2. Make sense of problems and persevere in solving them. 3. Model with mathematics. 4. Use appropriate tools strategically. 5. Attend to precision. 6. Solve multi-step real-life and mathematical problems posed with positive and negative rational numbers in any form (whole numbers, fractions, and decimals), using tools strategically. Apply properties of operations to calculate with numbers in any form; convert between forms as appropriate; and assess the reasonableness of answers using mental computation and estimation strategies.