Math Worksheets and Study Guides Second Grade. One More, One Less

The resources above correspond to the standards listed below:

Missouri Standards

MO.A. Algebraic Relationships
A.3. Use mathematical models to represent and understand quantitative relationships.
A.3.A. Use mathematical models
A.3.A.1. Model situations that involve addition and subtraction of whole numbers, using pictures, objects or symbols (DOK 2; MA1 1.6)
MO.N. Number and Operations
N.2. Understand meanings of operations and how they relate to one another.
N.2.A. Represent operations
N.2.A.1. Represent/model a given situation involving two-digit whole number addition or subtraction (DOK 2; MA1 1.10)
N.3. Compute fluently and make reasonable estimates.
N.3.A. Describe or represent mental strategies
N.3.A.1. Describe or notate the mental strategy used to compute addition or subtraction of whole numbers, including 2-digit numbers (DOK 2; MA1 3.2)
N.3.B. Develop and demonstrate fluency
N.3.B.1. Demonstrate fluency including quick recall with basic number relationships of addition and subtraction for sums up to 20 (DOK 1; MA1 1.6)

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