It is not necessary to have a motion to approve the minutes.
This is one of the situations where the Chair can 'assume" the motion, as the only motion that can be made is to approve the minutes. The chair simply says "The next business in order is the approval of the minutes of (date), are there any corrections." Corrections is the proper term, as deletions or additions are actually corrections.
If there are none, the chair says "Hearing none the minutes of (date) are approved as presented"
If there are correction, after all the corrections have been made the Chair says "the minutes of (date) are approved as corrected." The chair then proceeds immediately to the next order of business.