Time worksheets with addition of quarter hours (addition of 15 minute intervals to times).
These worksheets deal with adding minutes to quarter hour times shown on an analog clock face. They are great first practice for adding times where the starting time is something more complex than a whole hour.
If you have been learning analog clock time with a a focus on quarter hour intervals, some of these worksheets will provide practice adding common units of time like 15 minute or 30 minute intervals, which makes them great practice for building competency with units of tie in between whole hours and individual minutes.