Students will measure time intervals (elapsed time, or how much time has passed) in minutes using addition or subtraction, and visuals such as clocks and a number line diagram. Use this worksheet for small groups, review and remediation, or tutoring. You can also assign it as independent practice, homework or as an exit ticket/slip to assess student mastery.This skills-focused worksheet begins with a mini-lesson on finding how much time has passed using start and end times, followed by 6 asses