Solving One Step Addition and Subtraction Equations

Front

What is a one-step addition equation?

Back

An equation that can be solved in one step by adding a number to both sides to isolate the variable.

Front

What is a one-step subtraction equation?

Back

An equation that can be solved in one step by subtracting a number from both sides to isolate the variable.

Front

Solve the equation: c + 9 = 21

Back

c = 12

Front

Solve the equation: x - 5 = 10

Back

x = 15

Front

What is the inverse operation of subtraction (-)?

Back

Adding (+) is the inverse operation of subtraction.

Front

What is the inverse operation of addition (+)?

Back

Subtracting (-) is the inverse operation of addition.

Front

Solve the equation: w + 27 = 58

Back

w = 31

Front

Solve the equation: 99 = 51 + y

Back

y = 48

Front

If you have an equation x + a = b, how do you isolate x?

Back

Subtract a from both sides: x = b - a.

Front

If you have an equation y - b = c, how do you isolate y?

Back

Add b to both sides: y = c + b.