Topic 9: Fluently Add and Subtract Within 1,000
9-1
Use Partial Sums to Add
9-2
Add 3-Digit Numbers
9-3
Continue to Add 3-Digit Numbers
9-4
Add 3 or More Numbers
9-5
Use Partial Differences to Subtract
9-6
Subtract 3-Digit Numbers
9-7
Continue to Subtract 3-Digit Numbers
9-8
MATH PRACTICES AND PROBLEM SOLVING
9-1
Use Partial Sums to Add
9-2
Add 3-Digit Numbers
9-3
Continue to Add 3-Digit Numbers
9-4
Add 3 or More Numbers
9-5
Use Partial Differences to Subtract
9-6
Subtract 3-Digit Numbers
9-7
Continue to Subtract 3-Digit Numbers
9-8
MATH PRACTICES AND PROBLEM SOLVING