Expressions & Equations Review

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(s) of the variable(s) that make the equation true.

Front

What is a variable in mathematics?

Back

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

Front

Translate this statement into an equation: 'Three times a number is 12.'

Back

3x = 12

Front

What is the solution to the equation 2x = 36?

Back

x = 18

Front

How do you isolate a variable in an equation?

Back

To isolate a variable, you perform operations to get the variable on one side of the equation and the constants on the other.

Front

What does 'twice a number' mean in mathematical terms?

Back

'Twice a number' means to multiply the number by 2.

Front

Translate this statement into an equation: 'Five more than a number is 10.'

Back

n + 5 = 10

Front

What is the first step to solve the equation n - 5 = 6?

Back

Add 5 to both sides of the equation.

Front

What is the equation for the total number of students in 5 classes with 24 students each?

Back

Total students = 5 * 24