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Homework Videos Topic 3
Place Value to Add & Subtract
3.1 Adding with an Expanded Algorithm
Solve Addition Problems with Expanded Form
3.2 Models for Adding 3-Digit Numbers
Regroup by Trading
3.3 Adding 3-Digit Numbers
Add within 1000 by Regrouping Base 10 Blocks
3.4 Adding 3 or More Numbers
3.5 Draw a Picture
3.6 Subtracting with Expanded Algorithm
Subtract 3-Digit Numbers Using Expanded Form
3.7 Models for Subtracting 3-Digit Numbers
Subtract within 1000 Using Base 10 Blocks
3.8 Subtracting 3-Digit Numbers
Subtract within 1000 by Regrouping
3.9 Subtracting Across Zero
Subtraction Across Zero
3.10 Making Sense of Addition Equations
Missing Addends
3.11 Making Sense of Subtraction Equations
Unknown Number
3.12 Adding and Subtracting
Solving for Unknowns: Fact Families
3.13 Draw a Picture and Write an Equation