Solve two-step word problems involving addition and subtraction with numbers up to three digits. May 13, 2025 by Dan
Problem Solving: Solve one-step word problems involving addition or subtraction with numbers up to three digits. May 13, 2025 by Dan
Use subtraction to check addition calculations (e.g., if 25+15=40, then 40−15=25). May 13, 2025 by Dan
Use addition to check subtraction calculations (e.g., if 50−20=30, then 30+20=50). May 13, 2025 by Dan
Understand that an estimate gives an approximate answer to check for reasonableness. May 13, 2025 by Dan
Round numbers to the nearest 10 or 100 to estimate the answer to an addition or subtraction calculation. May 13, 2025 by Dan
Subtract a 2-digit number from a 3-digit number with regrouping from tens to ones. May 13, 2025 by Dan
