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13 Cards in this Set

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formula
A formula is a rule showing relationships among quantities.
variable
A variable is used to represent a quantity whose values may change or vary. Formulas contain variables represented by a letter.
expression
An expression is a mathematical phrase that can be made up of variables and/or numbers and operations. Examples of expressions include: 8 – 3*5 and x + 7.
Commutative property of Addition
Commutative property of Addition/(order doesn’t matter)/2 + 5 = 5 + 2/a + b = b + a
Commutative property of Multiplication
Commutative property of Multiplication/(order doesn’t matter)/2*3 = 3*2/a*b = b*a
Associative property of Addition
Associative property of Addition/(grouping doesn’t matter)/2 + (3 + 4) = (2 + 3) + 4/a + (b + c) = (a + b) + c
Associative property of Multiplication
Associative property of Multiplication/(grouping doesn’t matter)/2(5*9) = (2*5)9/a(bc) = (ab)c
Distributive property
Distributive property/8(1 + 5) = 8(1) + 8(5)/a (b + c) = ab + ac/Inverse operations
algebraic expression
An algebraic expression is an expression that contains a variable. Algebraic expressions translate words into mathematical symbols.
equation
An equation is a statement that two expressions are equal.
solve
To solve an equation containing a variable means to find the value of the variables that make the equation true.
solution
A solution is the answer to a problem, question or equation. A solution to a variable makes the original equation true.
Golden rule of Algebra
Golden rule of Algebra: When solving equations, keep the equation balanced. In other words, what you do to one side, you must do to the other side.