Measurement · Challenge 15 of 25 · about 6 min
Time Across Noon
Use friendly time jumps to calculate a duration across noon.
Year 4 challenge progress
0 of 25 complete
1 Read
Your challenge
A school activity starts at 10:45 am and finishes at 1:20 pm. How long does the activity last?
Take your time. Your answer is checked only when you choose Check Answer.
Curriculum details
- Curriculum code
- VC2M4M03
- Strand
- Measurement
- Focus
- Calculate duration involving am and pm.
2–5 Notice · Build · Move · Connect
Interactive visual
An interactive Jump to friendly times model is ready. Choose Show Visual Trick to reveal and hear one mathematical change at a time.
Visual Trick
Jump to friendly times
Jump to the next whole hour, then across noon, and then to the finish time.
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Step 1
Jump from 10:45 am to 11:00 am: 15 minutes.
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Step 2
Jump from 11:00 am to 1:00 pm: 2 hours.
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Step 3
Jump from 1:00 pm to 1:20 pm: 20 minutes.
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Step 4
Combine the jumps as 2 hours 35 minutes.
6 Solve
Your answer
7 Check
Worked explanation
Why the answer makes sense
- The first jump is 15 minutes.
- The middle jump is 2 hours and the last jump is 20 minutes.
- 15 minutes + 2 hours + 20 minutes = 2 hours 35 minutes, or 155 minutes.
Challenge complete
This counts as one completed curriculum item. You can replay the model or review it again anytime.