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Subtraction with Decompositions

Related Topics:
Common Core Math Resources, Lesson Plans & Worksheets for all grades
Common Core Math Lessons, Math Worksheets and Games for Grade 2
Common Core Math Lessons, Math Worksheets and Games for all grades



Examples, videos, and solutions to help Grade 2 students learn how to use math drawings to represent subtraction with up to two decompositions, relate drawings to the algorithm, and use addition to explain why the subtraction method works.

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

New York State Common Core Math Grade 2, Module 5, Lesson 14, Lesson 15

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

Common Core Grade 2, Module 5, Lesson 14 Worksheets
Common Core Grade 2, Module 5, Lesson 15 Worksheets

NYS Math Module 5 Grade 2 Lesson 14

Lesson 14 Homework

1. Solve by drawing number disks on a chart. Then, use addition to check your work.
b. 463 - 357
d. 861 - 673



NYS Math Module 5 Grade 2 Lesson 15


Lesson 15 Homework

1. Solve by drawing chips on the place value chart. Then, use addition to check your work.
b. 742 – 495
e. 941 – 628

2. Complete all of the if...then statements. Draw a number bond to represent the related facts.
a. If 928 – ________ = 519, then 519 + 409 = _________.
b. If 764 – _______ = 391, then ________ + 391 = 764.


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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