**Virginia Education Standards**. Count forward by 1 or count backwards by 1. Read More...

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VA.2. Computation and Estimation

Focus: Number Relationships and Operations

2.5. The student will recall addition facts with sums to 20 or less and the corresponding subtraction facts.

2.6. The student, given two whole numbers whose sum is 99 or less, will

2.6.b) find the sum, using various methods of calculation.

VA.2. Patterns, Functions, and Algebra

Focus: Patterning and Numerical Sentences

2.22. The student will demonstrate an understanding of equality by recognizing that the symbol = in an equation indicates equivalent quantities and the symbol not equal to indicates that quantities are not equivalent.