Third Grade Mental Math
Grade 3 / Math / Number Sense
CCSS:
Math.3.NBT.A.2
Common Core State Standards
Math 
Math 
3 
Grade 3 
NBT 
Numbers & Operations in Base Ten 
A 
Use place value understanding and properties of operations to perform multidigit arithmetic 
2 
Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction. 
Download Common Core State Standards (PDF 1.2 MB) 
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 Lesson Objective
 Use the strategies of decomposing, jumps of ten, and splitting
 Length
 6 min
 Questions to Consider
 How does mental math deepen students understanding of the basic operations?
 What strategies does Ms. Saul use to encourage independent thinking before sharing responses?
 Notice how students use a common vocabulary to describe strategies.
 Support Materials Below
 More Info on Mental Math
 Common Core Standards
 Math.3.NBT.A.2
Teacher & School Info
 School Details
 Aspire East Palo Alto Charter School East Palo Alto, CA
 Population
 759 students
 District Spending
 $8,487
Supporting Materials

Transcript for Third Grade Mental Math

More Information on Mental Math Strategies
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Lesson Idea (Common Core) Third Grade Mental Math
Grade 3 / Math / Number Sense