Variable Expressions Vocabulary

A mathematical expression is a combination of symbols that can designate numbers (constants), variables, operations, symbols of grouping and other punctuation, all of which could be evaluated to achieve a single value (if the variables were known).
An equation, on the other hand, is a statement of equality between two expressions. You can recognize them by the equals sign.
Literal Numerals are letters that stand for specific numbers. The Greek letter π is a literal numeral for the irrational number 3.14159265..., and in most algebraic expressions, the beginning of the alphabet is reserved for literal values (a, b, c, etc)
A Constant represents a known value in an algebraic expression. For example, in the expression x-y+4, the positive 4 is a constant.
A Variable is a symbol that represents a changeable or undetermined quantity in an algebraic expression. When we solve for x, x is the variable because its value is unknown until we solve. In the expression x-y+4, both x and y are variables.
Operations are tasks performed on 1 or more numbers. These include addition, subtraction, multiplication, and division, as well as taking an absolute value, raising to an exponent, and evaluating and square root.
Grouping Symbols include parentheses (), curly brackets {}, or square brackets []. They are used to specify or override the order of operations.

00:00

Press the Start Button To Begin

You have 0 correct and 0 incorrect.

This is 0 percent correct.

Game Name	Description	Best Score
	How many correct answers can you get in 60 seconds?	0
	Extra time is awarded for each correct answer. Play longer by getting more correct.	0
	How fast can you get 20 more correct answers than wrong answers?	999