Core Math Resources, Lesson Plans & Worksheets for all grades
Common Core Math
Lessons, Math Worksheets and Games for Grade 2
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 and without decomposition and relate drawings to a written method.
Common Core Standards: 2.OA.1,
New York State Common Core Math Grade 2, Module 4, Lessons 13
NYS Math Module 4 Grade 2 Lesson 13
Lesson 13 Homework
1. Complete the problem by subtracting vertically. Use the place value chart and chips
to model each problem. Show how you change 1 ten for 10 ones when necessary.
54 – 28 = _____
2. Solve vertically. Draw a place value chart and chips to model each problem. Show
how you change 1 ten for 10 ones when necessary.
a. 31 – 19 = _____
d. 67 – 44 = _____
d. 82 – 59 = _____
Subtraction Algorithm Represented as Chip Model
51 - 29 =
This video shows how to use the place value chart and chips to model the problem
52 - 18 =
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