Mathematics | Grade : 6
Domain - Expressions and Equations
Cluster - Apply and extend previous understandings of arithmetic to algebraic expressions.
[6.EE.A.2] - Write, read, and evaluate expressions in which letters stand for numbers.
- Expression
A mathematical phrase that combines operations, numbers, and/or variables (e.g., 32 ÷ a).
[6.EE.A.1] -
Write and evaluate numerical expressions involving whole-number exponents.
[6.EE.A.3] -
Apply the properties of operations to generate equivalent expressions. For example, apply the distributive property to the expression 3(2 + x) to produce the equivalent expression 6 + 3x; apply the distributive property to the expression 24x + 18y to produce the equivalent expression 6(4x + 3y); apply properties of operations to y + y + y to produce the equivalent expression 3y.
[6.EE.A.4] -
Identify when two expressions are equivalent (i.e., when the two expressions name the same number regardless of which value is substituted into them). For example, the expressions y + y + y and 3y are equivalent because they name the same number regardless of which number y stands for.
[6.EE.B.6] -
Use variables to represent numbers and write expressions when solving a real-world or mathematical problem; understand that a variable can represent an unknown number, or, depending on the purpose at hand, any number in a specified set.