Evaluate Expressions

Front

Evaluate expression if a=3 and b=4: 4b - 5a

Back

1

Front

Evaluate expression x=7, y=15, z=8: 13y - zx ÷ 4

Back

181

Front

Evaluate expression a=3, b=4: ab + 7 x 11

Back

89

Front

Evaluate expression a=3, b=4: 36 ÷ 6a

Back

18

Front

Evaluate expression if a=3 and b=4: 18 ÷ 2a

Back

27

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: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). Often remembered as PEMDAS.

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 'a' in the expression 5a + 3 if a = 2?

Back

13