Lesson: Checking Two-Digit Subtraction Problems by Adding
In this lesson, we will learn how to use addition to check subtraction and identify the related addition equation that can be solved to check the answer.
Sample Question Videos
Worksheet: 8 Questions • 2 Videos
Choose a strategy and solve the expression.
Hint: You can use the vertical column method.
Check your answer using the inverse operation. Remember that inverse means the opposite.
Which addition expression shows the opposite calculation you need to carry out?
Who is correct? Use the vertical column method to find out.
Check your answer using the inverse operation.
What number do you add to 45 to get 96?
If you know that , find the total of without calculating.