Evaluate Expressions

Front

Evaluate b² + 4 when b=3

Back

13

Front

If a=10 and b=6, evaluate 8a - b

Back

74

Front

Evaluate x + 12 when x = 2.2

Back

14.2

Front

Evaluate 4b - 5a when a=3 and b=4

Back

1

Front

If r=3, evaluate 2r + 1

Back

7

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 variables with numbers.

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 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 value of 5 when x=5?

Back

5