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Time Measurement Basics

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Time Measurement Basics

Ngaio is planning a Saturday trip to the local pool. Use the timetable and clock diagrams to solve each time challenge. Write times in 24-hour format where asked.

Activity

Time

Leave home

09:10

Arrive at the pool

09:35

Swimming starts

See clock

Swimming finishes

11:15

Leave the pool

11:30

Read the time

Use the timetable and clock to answer the first challenges.

1.Which unit is most suitable for measuring the time it takes to walk from the pool entrance to the changing rooms: seconds, minutes or hours? Explain your choice.

2.Ngaio leaves home at 09:10 and arrives at the pool at 09:35. How long does the trip take?

15 minutes
25 minutes
35 minutes
45 minutes

3.How many minutes are there in 2 hours and 15 minutes? Show a calculation.

4.The clock shows when swimming starts. Write the time in 12-hour form and 24-hour digital form.

Work out durations

Use the schedule to reason about elapsed time and sensible estimates.

5.Swimming starts at 10:00 and finishes at 11:15. How long is the swim session? Show how you worked it out.

6.Ngaio arrives at the pool at 09:35 and swimming starts at 10:00. She spends 8 minutes getting changed. How many minutes are left to wait?

7.A bus is scheduled to leave at 11:30. It is delayed by 18 minutes. What is the new departure time? Give your answer in 24-hour format.

8.Choose the correct statement about the time from leaving home at 09:10 to leaving the pool at 11:30.

2 hours 10 minutes
2 hours 20 minutes
2 hours 30 minutes
3 hours 20 minutes

9.Ngaio estimates that getting changed takes about 10 minutes. Is this a sensible estimate for a short changing-room task? Write yes or no and give one reason.