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Addition and Subtraction Strategies

Related Topics:
Lesson Plans and Worksheets for all Grades
Common Core For Grade 2
Math Videos Worksheets for all Grades



Common Core Standards: 2.NBT.7, 2.NBT.8, 2.NBT.9

Free math video lessons with examples and worked solutions to help to help Grade 2 students learn how to choose and explain solution strategies and record with a written addition or subtraction method.

New York State Common Core Math Grade 2, Module 5, Lesson 19, Lesson 20

Grade 2, Module 5, Lesson 19 Worksheets (pdf)
Grade 2, Module 5, Lesson 20 Worksheets (pdf)

Topic C: Strategies for Decomposing Tens and Hundreds Within 1,000

NYS Math Module 5 Grade 2 Lesson 19


Lesson 19 Homework

1. Solve and explain why you chose that strategy.
c. 519 + 342 = ______
f. 904 – 395 = ______



Lesson 20 Homework

1. Solve each problem using two different strategies.
a. 456 + 244 = _________
b. 698 + ______ = 945


Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.


You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.


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