Subtracting 9 the

In this lesson, students will use the hundreds chart to discover a strategy to subtract 9 from different numbers. Students will learn and practice the compensation strategy of subtracting 10 and then adding 1 back to get the final difference. Students will also learn and practice visualizing to “mentally see” the hundreds chart and use it as an efficient mental math strategy to subtract 9 from any given two-digit number.
Resource ID#: 45842 Type: Lesson Plan
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General Information

Subject(s): Mathematics
Grade Level(s): 1
Intended Audience: Educators educators
Instructional Time: 45 Minute(s)
Keywords: subtraction strategies, hundreds chart, compensation, subtract 9, ten less
Instructional Component Type(s): Lesson Plan
Resource Collection: CPALMS Lesson Plan Development Initiative

Aligned Standards

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