Unit 5: Subtracting Two-Digit Numbers

• Chapter 12: Regrouping with Subtraction
  • Lesson 12.1 Mental Math: Subtract Tens
  • Lesson 12.2 Subtract Tens on a Hundred Chart
  • Lesson 12.3 Regroup Tens
  • Lesson 12.4 Decide When to Regroup
  • Lesson 12.5 Subtract One-Digit Numbers from Two-Digit Numbers
  • Lesson 12.6 Subtract Two-Digit Numbers
  • Lesson 12.7 Problem-Solving: Use a Table
• Chapter 13: Using Two-Digit Subtraction
  • Lesson 13.1 Rewrite to Subtract
  • Lesson 13.2 More Two-Digit Subtraction
  • Lesson 13.3 Estimate Differences
  • Lesson 13.4 Choose a Way to Subtract
  • Lesson 13.5 Use Addition to Check Subtraction
  • Lesson 13.6 Problem-Solving: Choose the Operation