Topic 2

Topic 2  Adding and Subtracting Whole Numbers

2-1 Using Mental Math to Add and Subtract

2-2  Estimating Sums and Differences of Whole Numbers

2-3 Missing or Extra Information 

2-4 Adding Whole Numbers

2-5 Subtracting Whole Numbers

2-6  Subtracting Across Zeros

2-7 Draw a Picture and Write an Equation