Evaluate Expressions

Front

Evaluate 8a - b if a = 10 and b = 6

Back

74

Front

Evaluate 2r + 1 if r = 3

Back

7

Front

Evaluate when a = 15: 2(a - 5) + 2

Back

22

Front

Evaluate 4y if y = 3

Back

12

Front

Evaluate the expression: x + 12 when x = 2.2

Back

14.2

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (like +, -, *, /) 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 a variable in mathematics?

Back

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

Front

What is the order of operations?

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 3x + 4 when x = 2?

Back

10