Writing Expressions

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 write an expression for '10 less than a number n'?

Back

It means to subtract 10 from n, which is written as n - 10.

Front

How do you express 'the product of seven and a number increased by five'?

Back

This is expressed as 7n + 5.

Front

What is the expression for 'the product of 4 and p'?

Back

This is expressed as 4p.

Front

How do you write 'the quotient of y and 5'?

Back

This is written as y / 5.

Front

What does 'twice h increased by 5' mean in expression form?

Back

This means to multiply h by 2 and then add 5, written as 2h + 5.

Front

What is the difference between an expression and an equation?

Back

An expression does not have an equality sign, while an equation does.

Front

What is a variable in an expression?

Back

A variable is a symbol (often a letter) that represents an unknown value.

Front

What does 'increased by' indicate in an expression?

Back

It indicates that you should add a certain value to the variable or number.

Front

What does 'decreased by' indicate in an expression?

Back

It indicates that you should subtract a certain value from the variable or number.