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 'the product of two numbers' mean?

Back

It refers to the result of multiplying those two numbers together.

Front

How do you represent 'three times the sum of two numbers' in an expression?

Back

You add the two numbers together and then multiply the result by three, represented as 3 × (a + b).

Front

What is the difference between an expression and an equation?

Back

An expression does not have an equality sign and represents a value, while an equation states that two expressions are equal.

Front

How do you write '35 divided by 5 then subtract 8' as an expression?

Back

It is written as (35 ÷ 5) - 8.

Front

What does 'the sum of two numbers' refer to?

Back

It refers to the result of adding those two numbers together.

Front

How can you express 'Add 7 and 3 then take away 1' mathematically?

Back

It can be expressed as (7 + 3) - 1.

Front

What does 'the difference of two numbers' mean?

Back

It refers to the result of subtracting one number from another.

Front

How do you represent 'the difference of 8 and 5 divided by three'?

Back

It is represented as (8 - 5) ÷ 3.

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 abbreviated as PEMDAS.