Unit 1 ~ Three Digit Numbers: Place Value, Addition, & Subtraction
Unit 1 ~ Three Digit Numbers: Place Value, Addition, & Subtraction
Lesson 1: Use Place Value to Round Numbers
Session 1:Explore Using Place Value to Round Numbers
Round to the nearest ten or hundred using a number line
Session 2:Develop Rounding to the Nearest Ten
Session 3: Develop Rounding to the Nearest Hundred
Round to the nearest ten or hundred
Session 4:Refine Using Place Value to Round Numbers
Round to the nearest ten or hundred in a table
Lesson 2: Add Three-Digit Numbers
Session 1:Explore Adding Three-Digit Numbers
Session 2:Develop Using Place-Value Strategies to Add
Use models to add three-digit numbers: without regrouping
Use expanded form to add three-digit numbers
Also consider:
Estimate sums by rounding: up to 1,000
Session 3:Develop Connecting Place-Value Strategies to an Algorithm
Add two numbers up to three digits: with regrouping
Session 4:Refine Adding Three-Digit Numbers
Add two numbers up to three digits: word problems
Lesson 3: Subtract Three-Digit Numbers
Session 1:Explore Subtracting Three-Digit Numbers
Subtract numbers up to three digits: without regrouping
Session 2:Develop Using Place-Value Strategies to Subtract
Use models to subtract numbers up to three-digits: with regrouping
Use expanded form to subtract three-digit numbers
Session 3:Develop Adding On to Subtract
Session 4:Develop Connecting Place-Value Strategies to an Algorithm
Subtract three-digit numbers: with regrouping
Also consider:
Session 5:Refine Subtracting Three-Digit Numbers