Evaluating Expressions

Front

Evaluate 5m + 7 if m = 5

Back

32

Front

Evaluate m - n if m = 29 and n = 11

Back

18

Front

Back

57

Front

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

Back

44

Front

Evaluate 3d if d = 5

Back

15

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 given numbers.

Front

What is the order of operations in mathematics?

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 is a variable in mathematics?

Back

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

Front

What is the difference between an expression and an equation?

Back

An expression does not have an equality sign and represents a value, while an equation states that two expressions are equal.