Topic D: Two- and three-digit measurement addition using the standard algorithm

Topic D includes lessons 15-17. "Add measurements using the standard algorithm to compose larger units once. Add measurements using the standard algorithm to compose larger units twice. Estimate sums by rounding and apply to solve measurement word problems." Eureka Math/EngageNY (c) 2015 GreatMinds.org

Intro to place value

Using place value to add 3-digit numbers: part 1

Using place value to add 3-digit numbers: part 2

Estimating when adding multi-digit numbers

Estimate to add multi-digit whole numbers

Adding 3-digit numbers

Breaking apart 3-digit addition problems

Break apart 3-digit addition problems

Addition using groups of 10 and 100

Add using groups of 10 and 100

Add on a number line

Add within 1000

Select strategies for adding within 1000

Three digit addition word problems