Florida B.E.S.T. MA.3.M.2.2
The Standard
Solve one- and two-step real-world problems involving elapsed time.
Florida B.E.S.T. Standards for Mathematics
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students use start times, end times, and durations to find a missing value. They break longer intervals into manageable jumps and solve problems with one or two steps.
What Mastery Looks Like
- Students find a missing start time, end time, or duration and label the answer correctly. They solve two-step problems by tracking each time interval with a clock, number line, or equation.
Common Misconceptions
- Students may subtract clock numbers without accounting for the change of hour. They may confuse the start time, end time, and elapsed time, or treat 60 minutes as 100 minutes.
How to Assess It
- Give this exit ticket: “Art starts at 10:35 a.m. and ends at 11:20 a.m. How long is art? Show your steps.”
Lesson moves
Ways to Teach It
Give pairs analog clocks and event cards, then have them set each start time, move the hands, and record the end time.
Ask students to explain in writing how they would find the time from 1:45 p.m. to 3:10 p.m.
Play Elapsed Time Match, where students pair start-time, duration, and end-time cards and explain each completed set.
Use the class schedule to calculate how long lunch, reading, and recess last, then find the total time for two activities.
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Printable MA.3.M.2.2 Worksheet
A ready-to-print activity worksheet aligned to MA.3.M.2.2, with an answer key for the teacher on its own page. No account needed.
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Related Standards
- MA.3.AR.1.2
Solve one- and two-step real-world problems involving any of four operations with whole numbers.
- MA.2.AR.1.1
Solve one- and two-step addition and subtraction real-world problems.
- MA.3.M.2
Tell and write time and solve problems involving time.
- MA.4.M.2.1
Solve two-step real-world problems involving distances and intervals of time using any combination of the four operations.
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