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 'times' indicate in a mathematical expression?

Back

'Times' indicates multiplication. For example, 'three times a number' means 3 times that number.

Front

What does 'less than' indicate in a mathematical expression?

Back

'Less than' indicates subtraction. For example, 'five less than a number' means that number minus 5.

Front

How do you write 'twice a number' as an expression?

Back

2n, where n is the number.

Front

What is the expression for 'the sum of a number and 10'?

Back

n + 10, where n is the number.

Front

How do you express 'the difference between a number and 4'?

Back

n - 4, where n is the number.

Front

What does 'three times' mean in an expression?

Back

It means to multiply by 3. For example, 'three times x' is written as 3x.

Front

How do you express 'the total of 8 and a number'?

Back

8 + n, where n is the number.

Front

What does 'divided by' indicate in a mathematical expression?

Back

'Divided by' indicates division. For example, 'a number divided by 2' is written as n ÷ 2.

Front

How do you write 'the product of 5 and a number'?

Back

5n, where n is the number.