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 multiply in an expression?

Back

Multiplication in an expression means to combine quantities by repeated addition, represented by the symbol '*', or by placing numbers next to each other (e.g., 5x means 5 times x).

Front

How do you represent 'twice the sum of 2 and 3' in an expression?

Back

It can be represented as 2(2 + 3).

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

What does 'decreased by' indicate in an expression?

Back

'Decreased by' indicates subtraction. For example, '25 decreased by 5' can be written as 25 - 5.

Front

What is the meaning of 'the quotient of 18 divided by 3'?

Back

It refers to the result of dividing 18 by 3, which can be expressed as 18 / 3.

Front

How do you express '3/4 of 1 less than 13'?

Back

It can be expressed as (3/4) * (13 - 1).

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.

Front

What is a variable in an expression?

Back

A variable is a symbol (usually a letter) that represents an unknown value in an expression or equation.

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to combine like terms and perform operations to reduce it to its simplest form.