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.

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.

Front

Write the equation for: You have some candies, you gave away 5, and now you have 10 left. How many candies did you start with?

Back

c - 5 = 10; c = 15

Front

Solve the equation: 15 + x = 22

Back

x = 7

Front

What is the inverse operation of subtraction (-)?

Back

Adding (+) is the inverse operation of subtraction.

Front

Write the equation for: You have 30 dollars, you spent some, and now you have 12 left. How much did you spend?

Back

30 - x = 12; x = 18

Front

Solve the equation: y - 9 = 5

Back

y = 14

Front

What does it mean to isolate a variable in an equation?

Back

To isolate a variable means to get the variable alone on one side of the equation.

Front

Write the equation for: You have a number, you added 4, and the result is 10. What is the number?

Back

x + 4 = 10; x = 6

Front

Solve the equation: z + 12 = 20

Back

z = 8