Evaluating Expressions

Front

Evaluate 2a + 4b if a = 10 and b = 6.

Back

44

Front

Evaluate 3(x + 4) when x = 2.

Back

18

Front

Evaluate 2k - 6 when k = 10.

Back

14

Front

Evaluate 3d if d = 5.

Back

15

Front

Evaluate n^3 if n = 4.

Back

64

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (such as +, -, *, /) that represents a value.

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with their given values.

Front

What is the order of operations in mathematics?

Back

The order of operations is a set of rules that determines the sequence in which calculations are performed: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Front

What is a variable in an expression?

Back

A variable is a symbol (usually a letter) that represents an unknown value in an expression.

Front

What is the value of x in the expression 5x if x = 3?

Back

15