 # Subtraction Algorithm

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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 relate manipulative representations to the subtraction 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 13

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

### NYS Math Module 5 Grade 2 Lesson 13

Common Core Grade 2, Module 5, Lesson 13 Worksheets

Lesson 13 Homework

2. Solve using either mental math or the vertical method with number disks. Check your work using addition.
b. 153 – 38 = _______
d. 485 – 177 = _______

3. Complete the number sentence modeled by disks.

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