Solving Addition and Subtraction Equations

Front

What is the inverse operation needed to solve for p in the equation 765 = p - 254?

Back

Addition

Front

Solve for x: x - (-6) = 22

Back

x = 16

Front

What is the result of 19 - (-19)?

Back

38

Front

Karen has $250 in her account. This is $75 more than her brother Noah has in his account. Write an addition equation to find the amount of money in Noah’s account.

Back

75 + N = 250

Front

What is the result of -20 + (-11)?

Back

-31

Front

What is the definition of an equation?

Back

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

Front

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

Back

To isolate a variable means to manipulate the equation so that the variable is on one side and all other terms are on the other side.

Front

What is the purpose of using inverse operations in solving equations?

Back

Inverse operations are used to undo operations in an equation to isolate the variable and solve for its value.

Front

If 5 + x = 12, what is the value of x?

Back

x = 7

Front

What is the result of 100 - 45?

Back

55