STATION 2 - Evaluate Expressions

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

If a = 5 and b = 2, what is the value of 2a + 3b?

Back

16

Front

If y = 8, what is the value of 2y - 3?

Back

13

Front

If c = 10, find the value of 3c + 4.

Back

34

Front

What is the value of 3x + 5 when x = 4?

Back

17

Front

If m = 7 and n = 4, what is the value of 2m - n?

Back

10

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 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 the value of 5 + 3 * 2?

Back

11 (because multiplication is done before addition).