Work Step by Step
Given that the difference between $17$ and $13$ is $4$ we use addition to check the answer to a subtraction problem. $4 + 13 = 17$ Check The number needed to complete the check is $4$.
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.