Writing Equations

Front

What is an equation?

Back

An equation is a mathematical statement that asserts the equality of two expressions, typically containing variables.

Front

What does it mean to solve an equation?

Back

To solve an equation means to find the value of the variable that makes the equation true.

Front

What is a variable in an equation?

Back

A variable is a symbol, often a letter, that represents an unknown value in an equation.

Front

What does 'less than' indicate in an equation?

Back

'Less than' indicates subtraction. For example, '17 less than h' means h - 17.

Front

How do you represent 'the sum of a number and 5' in an equation?

Back

You represent it as 'x + 5', where x is the unknown number.

Front

What is the equation for finding change received after a purchase?

Back

The equation is 'Cost + Change = Amount Given'.

Front

How do you model a situation where a total is known after some items are taken away?

Back

You use the equation 'Total - Items Taken = Remaining Items'.

Front

What does the equation '3x = 27' represent?

Back

It represents that 3 times a number x equals 27, which can be solved to find x.

Front

How do you express 'a number decreased by 4 equals 58'?

Back

You express it as 'x - 4 = 58'.

Front

What is the first step in solving the equation 'x + 7 = 15'?

Back

The first step is to subtract 7 from both sides to isolate x.