Adding and Subtracting on a Hundred Chart

This lesson is not an introduction to adding and subtracting on the hundreds chart, but rather a practice of strategies to help develop procedural reliability. Students will use the hundred chart to add two two-digit numbers and subtract two-digit numbers from two-digit numbers to reveal hidden designs on the charts. Students will be encouraged to use place value to decompose the two-digit number that is being added or subtracted into tens and ones and then use the structure of the hundred chart to efficiently add the tens by moving up or down full rows before counting on or counting back the number of remaining ones.
Resource ID#: 42297 Type: Lesson Plan
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General Information

Subject(s): Mathematics
Grade Level(s): 2
Intended Audience: Educators educators
Suggested Technology: Document Camera
Instructional Time: 1 Hour(s)
Keywords: addition, subtraction, hundred chart, adding two-digit numbers, subtracting two-digit numbers, structure of hundred chart, adding multiples of ten, subtracting multiples of ten, decomposing using place value
Instructional Component Type(s): Lesson Plan
Resource Collection: CPALMS Lesson Plan Development Initiative

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