Elapsed Time Word Problems on an Open Number Line
A 3rd-grade practice worksheet of elapsed time word problems about recess, breakfast, workouts, and lessons, where students solve for start time, end time, or elapsed time using an open number line. It includes a "Time Facts to Remember" reference box and a worked example with step-by-step jumps, making it well suited to a 20-30 minute independent or partner practice block.
Teacher Guide & Tips
- Introduce the open number line with a whole-class demonstration on a clock or the worked example before students work independently, and remind them that the minute hand moves 5 minutes per number.
- Discussion question: Why is it helpful to jump to a "friendly" time like 10:05 or 10:30 instead of counting every minute one at a time?
- Scaffold for struggling readers: Read each word problem aloud together, underline the start and end times, and provide a pre-drawn number line with the start and end times marked so students focus on the jumps.
- Extension for advanced students: Ask them to write their own elapsed time problem that crosses the hour (such as 2:48 p.m. to 3:17 p.m.) and solve it with an open number line, or to find a missing start time when given an end time and duration.
- Estimated time: About 20-30 minutes for the full set, depending on how many problems you assign and how much modeling you provide.
Elapsed Time Word Problems on an Open Number Line
A 3rd-grade practice worksheet of elapsed time word problems about recess, breakfast, workouts, and lessons, where students solve for start time, end time, or elapsed time using an open number line. It includes a "Time Facts to Remember" reference box and a worked example with step-by-step jumps, making it well suited to a 20-30 minute independent or partner practice block.
Teacher Guide & Tips
- Introduce the open number line with a whole-class demonstration on a clock or the worked example before students work independently, and remind them that the minute hand moves 5 minutes per number.
- Discussion question: Why is it helpful to jump to a "friendly" time like 10:05 or 10:30 instead of counting every minute one at a time?
- Scaffold for struggling readers: Read each word problem aloud together, underline the start and end times, and provide a pre-drawn number line with the start and end times marked so students focus on the jumps.
- Extension for advanced students: Ask them to write their own elapsed time problem that crosses the hour (such as 2:48 p.m. to 3:17 p.m.) and solve it with an open number line, or to find a missing start time when given an end time and duration.
- Estimated time: About 20-30 minutes for the full set, depending on how many problems you assign and how much modeling you provide.