Practice questions 14 ⋅ 1


1. What is the most appropriate unit to measure each of the following? (i) The distance from Dublin to Cork (ii) The length of your fi ngernail (iii) The length of a table


metres (m) kilometres (km)


(iv) The time to cook a pizza (v) The length of the school day (vi) The time it takes to blink


2. Put these units of measure in order from smallest to largest on the line below: millimetres (mm)


centimetres (cm) smallest largest


3. Convert the following units of distance and time into the unit shown in brackets beside the question.


(i) 10 km (m) (ii) 500 cm (mm) (iii) 30 min (s)


(iv) 3 600 s (hr) (v) 1 200 mm (m) (vi) 24 hr (min)


4. Convert the following times from hours and minutes to hours. Give your answers as decimals correct to two places.


(i) 1 hour and 40 minutes (ii) 3 hours and 10 minutes (iii) 2 hours and 18 minutes (iv) 2 hours and 23 minutes


5. Convert these 12-hour times to 24-hour times.


(i) 3:15 am (ii) 8:25 pm (iii) Midnight


(iv) 2:55 pm (v) 1:27 am (vi) Noon


6. Convert these 24-hour times to 12-hour times.


(i) 07:40 (ii) 18:27 (iii) 00:01


(iv) 10:35 (v) 19:54 (vi) 05:56


7. Tracey caught the bus to work at 07:52 and arrived at her stop at 08:45. From there, it took her 11 minutes to walk to work.


(i) How long was Tracey’s bus journey?


(ii) What time did Tracey arrive at work?


8. Part of the timetable for a bus from Cork to Shannon airport is shown. Study the timetable and answer the questions:


Station Cork


Mallow


Charleville Limerick


Shannon Airport Departure Time


07:35 08:05 08:30 09:05 09:28


(i) How long does it take to go from Cork to Mallow?


(ii) How long does it take to go from Charleville to Limerick?


(iii) How long does it take to go from Cork to Shannon airport?


(iv) If the bus is delayed by 25 minutes and Ada has to check in for a fl ight 2 hours beforehand, will she make a fl ight at 11:30?


9. Study the train timetable shown and answer the following questions:


Athlone


Craughwell Oranmore


Ballinasloe 07:00 09:22 11:22 14:22 16:22 18:22 20:22 22:22 00:22 Aughrim Loughrea


09:50 11:50 14:50 16:50 18:50 20:50 22:50 00:50 10:05 12:05 15:05 17:05 19:05 21:05 23:05 01:05 10:15 12:15 15:15 17:15 19:15 21:15 23:15 01:15


Galway 07:45 10:25 12:25 15:25 17:25 19:25 21:25 23:25 01:25


(i) You need to meet a friend for a coff ee at Galway station at 1:45 pm. Which train from Athlone would you recommend taking? Justify your answer.


(ii) What time should you leave Ballinasloe to get to Galway in the shortest possible time?


(iii) If you arrive in Oranmore at 15:15 from Athlone, how long have you been travelling for?


(iv) If you arrive in Galway at 19:25, what time did you leave Athlone?


(v) You are delayed in Craughwell. If you arrive in Galway at 21:37 after a 23-minute train ride from Craughwell, how long was the delay in Craughwell?


Section B Moving forward 217


08:55 10:55 13:55 15:55 17:55 19:55 21:55 23:55 09:35 11:35 14:35 16:35 18:35 20:35 22:35 00:35


14 Maths in motion


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