Variables and expressions

Translate between words and algebra

Evaluate algebraic expressions

Variable - a letter or a symbol used to represent a value that can change.

Constant - a value that does not change.

Numerical expression - may contain only constants and/or operations.

Algebraic expression - may contain variables, constants, and/or operations. 

Evaluate

+, Plus, Sum, Increased by

_{−, Minus, Difference, Less than}

x, Times, Product, Equal groups of

^{÷, Divided by, quotient}

x+3 we can say,"the sum of x and 3" or we can say, "x increased by 3"

m-7 we can say,"the difference of m and 7" or we can say, "7 less than m"

2(y) we can say, " 2 times y" or we can say, "the product of 2 and y"

k÷5 we can say, " k divided by 5" or we can say, " the quotient of k and 5"