Writing Expressions

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 'twice a number' mean?

Back

'Twice a number' means to multiply that number by 2.

Front

How do you write 'increased by' in an expression?

Back

'Increased by' means to add. For example, 'h increased by 5' is written as h + 5.

Front

What does 'decreased by' mean in an expression?

Back

'Decreased by' means to subtract. For example, 'u decreased by 17' is written as u - 17.

Front

What is the product of two numbers?

Back

The product is the result of multiplying those two numbers together.

Front

How do you express 'the quotient of a number and 16'?

Back

'The quotient of a number and 16' is written as n ÷ 16.

Front

What does '5 less than' indicate in an expression?

Back

'5 less than' means to subtract 5 from a number. For example, '5 less than x' is written as x - 5.

Front

How do you write 'the product of y and 7'?

Back

'The product of y and 7' is written as y ∙ 7.

Front

What does 'the sum of' mean in an expression?

Back

'The sum of' means to add. For example, 'the sum of a and b' is written as a + b.

Front

What is a variable in mathematics?

Back

A variable is a symbol (like x or y) that represents an unknown value.