Lesson 1 . . . . . . . . . . .  Properties of Addition Lesson 2 . . . . . . . . . . .  Mental Math and Multiples of Ten Lesson 3 . . . . . . . . . . .  More Mental Math and 5, 50, 500 Lesson 4 . . . . . . . . . . .  Problem Solving Lesson 5 . . . . . . . . . . .  Estimating Sums Lesson 6 . . . . . . . . . . .  Adding Numbers 2-Digits and 3-Digits Lesson 7 . . . . . . . . . . .  Three or More Addends Lesson 8 . . . . . . . . . . .  Rounding to Estimate Sums   MID-CHAPTER TEST Lesson 9 . . . . . . . . . . .  Estimating Differences Lesson 10 . . . . . . . . . .  Subtracting Large Numbers Lesson 11 . . . . . . . . . .  Problem Solving Lesson 12 . . . . . . . . . .  Subtracting with Zeros Lesson 13 . . . . . . . . . .  Adding and Subtracting to Solve Lesson 14 . . . . . . . . . .  Problem Solving Strategies   CHAPTER TEST MCAT (Math Comprehensive Assessment Test)   Return to Table of Contents

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