Unit 4: Rounding & Estimation

• Round 2- & 3-digit numbers to the nearest 10 and 100
• Color-by-Code, Connect-4, and match-up rounding games
• Estimate sums, differences, products, and quotients for reasonableness
• Real-world word problems with masses, liquid volumes, and money that require estimating answers
• True/False and “Find the Mistake” checks on rounding & estimation logic
• “Round first, then add” shopping-menu activities to practice mental estimation