Solving one step addition and subtraction equations

Front

What is an equation?

Back

An equation is a mathematical statement that shows that two expressions are equal, often containing a variable.

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, often a letter, that represents an unknown number in an equation.

Front

What is the first step in solving a one-step addition equation?

Back

The first step is to isolate the variable by performing the opposite operation.

Front

Solve: z + 13 = 32

Back

z = 19

Front

What is the first step in solving a one-step subtraction equation?

Back

The first step is to isolate the variable by performing the opposite operation.

Front

Solve: m - 29 = 41

Back

m = 70

Front

How do you check if a number is a solution to an equation?

Back

Substitute the number into the equation and see if both sides are equal.

Front

Is 5 a solution for w - 6 = 1?

Back

No, because substituting 5 gives -1, not 1.

Front

Solve: y + 0 = 2

Back

y = 2