How to Find a Missing Addend in an Addition Problem using Subtraction

Using Subtraction to Find a Missing Addend in an Addition Problem

When you have an addition problem and you need to find a missing addend, you can use subtraction to help you solve for the missing number. The key is to take the sum of the addition problem and subtract either the first addend or the second addend to find the missing addend.

Example: If you have an addition problem like 3 + 2 = 5 and you need to find the missing addend, you can use subtraction. You take the sum, which is 5, and subtract one of the addends. In this case, you can subtract 2 from 5:

5 - 2 = 3

So, the missing addend in the addition problem 3 + 2 = 5 is 3. By using subtraction in this way, you can easily find the missing addend in an addition problem.