Evaluating Expressions

Front

What is a coefficient in an algebraic expression?

Back

A coefficient is a numerical factor that multiplies a variable in an algebraic expression.

Front

What must you put in front of a variable if it is alone?

Back

1

Front

How do you evaluate an expression with a variable?

Back

Substitute the variable with its given value and perform the arithmetic operations.

Front

What is the result of evaluating n^3 when n = 4?

Back

64

Front

What does it mean when an expression states 'x inches shorter than y'?

Back

It means to subtract x from y, represented as y - x.

Front

How do you simplify the expression 6a - 3d when a = 1 and d = 2?

Back

Substituting the values gives 6(1) - 3(2) = 6 - 6 = 0.

Front

What is the formula for evaluating 3a + 5b when a = 4 and b = 6?

Back

Substituting the values gives 3(4) + 5(6) = 12 + 30 = 42.

Front

What is the difference between an expression and an equation?

Back

An expression is a combination of numbers, variables, and operations without an equality sign, while an equation states that two expressions are equal.

Front

What is the order of operations used to evaluate expressions?

Back

The order of operations is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right), often abbreviated as PEMDAS.

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting variables with numbers and performing the necessary operations.