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Determine the unknown whole number in an equation relating four whole numbers using comparative relational thinking. For example, solve 76 + 9 = n + 5 for n by arguing that nine is four more than five, so the unknown number must be four greater than 76.
Standard #: MAFS.4.OA.1.bArchived Standard
Standard Information
General Information
Subject Area: Mathematics
Grade: 4
Domain-Subdomain: Operations and Algebraic Thinking
Cluster: Level 3: Strategic Thinking & Complex Reasoning
Cluster: Use the four operations with whole numbers to solve problems. (Major Cluster) -
Clusters should not be sorted from Major to Supporting and then taught in that order. To do so would strip the coherence of the mathematical ideas and miss the opportunity to enhance the major work of the grade with the supporting clusters.
Date Adopted or Revised: 02/14
Content Complexity Rating:
Level 3: Strategic Thinking & Complex Reasoning
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More Information
Date of Last Rating: 08/14
Status: State Board Approved - Archived
Assessed: Yes
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Related Resources
Formative Assessments
- Comparative Relational Thinking in a Multiplication Equation # Students use comparative relational thinking to determine the value of an unknown number.
- Comparative Relational Thinking in a Division Equation # Students are asked to use comparative relational thinking to determine the value of an unknown number.
- Comparative Relational Thinking in an Addition Equation # Students use comparative relational thinking to determine the value of an unknown number.
- Comparative Relational Thinking in a Subtraction Equation # Students use comparative relational thinking to determine the value of an unknown number.
Lesson Plan
- Is the Equation True and Finding the Missing Number # Students will determine if an equation is true or false based on using comparative relational thinking and knowledge of operations. The students will also determine the unknown number in some equations involving addition.
Original Student Tutorials
- Think Fast! Comparative Strategies: Part 3 # Learn how to find a missing value when there are subtraction expressions on both sides of an equal sign by using comparative relational thinking and a number line in this interactive tutorial. This is part 3 in a 3-part series. Click below to open the other tutorials in the series on comparative strategies.
-
Think Fast! Comparative Strategies: Part 2 # Learn how to think fast to find a missing value when there are subtraction expressions on both sides of an equal sign by using using comparative relational thinking and a part-whole board in this interactive tutorial.
This is part 2 in a 3-part series. Click below to open the other tutorials in the series on comparative strategies.
- Part 1: Think Fast! Comparative Strategies (Addition expressions on both sides of the equal sign)
- Part 3: Think Fast! Comparative Strategies [COMING SOON]
- Think Fast: Comparative Strategies: Part 1 # Learn how to think fast and compare the parts in addition expressions on different sides of the equal sign to find an unknown number with this interactive tutorial.
MFAS Formative Assessments
- Comparative Relational Thinking in a Division Equation # Students are asked to use comparative relational thinking to determine the value of an unknown number.
- Comparative Relational Thinking in a Multiplication Equation # Students use comparative relational thinking to determine the value of an unknown number.
- Comparative Relational Thinking in a Subtraction Equation # Students use comparative relational thinking to determine the value of an unknown number.
- Comparative Relational Thinking in an Addition Equation # Students use comparative relational thinking to determine the value of an unknown number.
Original Student Tutorials Mathematics - Grades K-5
-
Think Fast! Comparative Strategies: Part 2 # Learn how to think fast to find a missing value when there are subtraction expressions on both sides of an equal sign by using using comparative relational thinking and a part-whole board in this interactive tutorial.
This is part 2 in a 3-part series. Click below to open the other tutorials in the series on comparative strategies.
- Part 1: Think Fast! Comparative Strategies (Addition expressions on both sides of the equal sign)
- Part 3: Think Fast! Comparative Strategies [COMING SOON]
- Think Fast! Comparative Strategies: Part 3 # Learn how to find a missing value when there are subtraction expressions on both sides of an equal sign by using comparative relational thinking and a number line in this interactive tutorial. This is part 3 in a 3-part series. Click below to open the other tutorials in the series on comparative strategies.
- Think Fast: Comparative Strategies: Part 1 # Learn how to think fast and compare the parts in addition expressions on different sides of the equal sign to find an unknown number with this interactive tutorial.