Addition & Subtraction Equations

Front

What is the value of n in the equation n + 8 = 12?

Back

n = 4

Front

What is the value of x in the equation 87 = 100 - x?

Back

x = 13

Front

What is the value of x in the equation 100 - x = 70?

Back

x = 30

Front

What is the value of q in the equation 13 + q = 24?

Back

q = 11

Front

What is the value of b in the equation 17 + b = 20?

Back

b = 3

Front

What is an equation?

Back

An equation is a mathematical statement that shows the equality of two expressions.

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 mathematics?

Back

A variable is a symbol used to represent an unknown value in an equation.

Front

What is the addition property of equality?

Back

The addition property of equality states that if you add the same number to both sides of an equation, the two sides remain equal.

Front

What is the subtraction property of equality?

Back

The subtraction property of equality states that if you subtract the same number from both sides of an equation, the two sides remain equal.