Author note — to cover

Adding and subtracting directed numbers, integers and decimals, including double signs like 5 - (-3); number-line reasoning; temperature and bank-balance differences. Products and quotients live on multiplying-dividing-negatives; negative fractions live in the FDP topic. Both tiers. (N2)

• Fluency — direct questions on adding and subtracting negative numbers, limited to this lesson's stated scope (4 questions).
• Application — use the same skill in unfamiliar or contextual questions without introducing a later method (4 questions).
• Check — questions built around the exclusions and likely misconceptions named in the lesson brief (4 questions).