Lesson 1 . . . . . . . . . . .  Regrouping When Adding Lesson 2 . . . . . . . . . . .  2 - Digit Addition Lesson 3 . . . . . . . . . . .  3 - Digit Addition Lesson 4 . . . . . . . . . . .  Estimating Sums Lesson 5 . . . . . . . . . . .  Adding 3 or More Numbers Lesson 6 . . . . . . . . . . .  Thinking Sensibly About Numbers   MID-CHAPTER TEST Lesson 7 . . . . . . . . . . .  Regrouping When Subtracting Lesson 8 . . . . . . . . . . .  Subtracting with 2 - Digit Numbers Lesson 9 . . . . . . . . . . .  Subtracting with 3 - Digits Lesson 10 . . . . . . . . . .  Guess Then Check Lesson 11 . . . . . . . . . .  Estimating Differences Lesson 12 . . . . . . . . . .  Zeros in Subtraction Lesson 13 . . . . . . . . . .  Solving Word Problems Lesson 14 . . . . . . . . . .  Solving Everyday Problems   CHAPTER TEST MCAT (Math Comprehensive Assessment Test)   Return to Table of Contents

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