Mathematics Expressions Practice

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 'product' mean in mathematics?

Back

The product is the result of multiplying two or more numbers together.

Front

How do you represent 'more than' in an expression?

Back

'More than' is represented by adding to a number or expression. For example, '7 more than x' is written as x + 7.

Front

How do you represent 'less than' in an expression?

Back

'Less than' is represented by subtracting from a number or expression. For example, '4 less than x' is written as x - 4.

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 does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting numbers for variables and performing the operations.

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

How do you write an expression for 'the total of 15 minutes practiced each day for 7 days'?

Back

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The result is 66.

Front

How do you express 'half of a number' in an expression?

Back