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5.19.1

A variable is a symbol that can stand for an unknown number (e.g., 𝑎 + 4 = 6) or for a quantity that changes (e.g., the rule or generalization for the pattern for an input/output table such as 𝑥 + 2 = 𝑦).

Virginia DOE
Last updated: 
2017-01-07 17:39:16

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  • This standard is part of: 5.19
Standards with the same topic and subject but for other grades

1.15.5

Inequalities such as 5 < 4 + 3 are not equations. Equations must have the equal symbol (e.g., 5 + 6 = 11).

Virginia DOE
Last updated: 
2016-12-20 11:55:57

1.15.a.5

Model an equation that represents the relationship of two expressions of equal value.

Virginia DOE
Last updated: 
2018-11-27 11:02:35

2.5.5

An equation (number sentence) is a mathematical statement representing two expressions that are equivalent. It consists of two expressions, one on each side of an 'equal' symbol (e.g., 5 + 3 = 8, 8 = 5 + 3 and 4 + 3 = 9 − 2).

Virginia DOE
Last updated: 
2018-12-02 13:24:42

3.20.5

Write number sentences to represent equivalent mathematical relationships (e.g., 4 x 3 = 14 - 2).

Virginia DOE
Last updated: 
2010-05-11 16:12:29

4.16.5

The not equal symbol (≠) means that the values on either side are not equivalent (not balanced).

Virginia DOE
Last updated: 
2016-12-27 06:44:38
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