Practice Maths

12-hour and 24-hour Time — Solutions

Click any answer to watch the solution video.

  1. Convert 12-hour to 24-hour time

    1. 6:30 am:
    2. 11:15 am:
    3. 12:00 pm:
    4. 3:45 pm:
    5. 7:00 pm:
    6. 11:59 pm:
    7. 12:00 am:
    8. 9:08 am:

  2. Convert 24-hour to 12-hour time

    1. 0730:
    2. 1200:
    3. 1545:
    4. 2000:
    5. 0005:
    6. 1310:
    7. 0945:
    8. 1850:

  3. Calculate duration

    1. 1045 to 1420:
    2. 0830 to 1200:
    3. 1315 to 1800:
    4. 0920 to 1415:
    5. 2245 to 0130 (next day):
    6. 0700 to 1025:
    7. 1155 to 1430:
    8. 0845 to 1700:

  4. Add or subtract time intervals

    1. 2 h 35 min + 1 h 50 min:
    2. 4 h 20 min + 3 h 55 min:
    3. 3 h 10 min − 1 h 45 min:
    4. 5 h 05 min − 2 h 30 min:
    5. 1 h 15 min + 2 h 50 min + 45 min:
    6. 6 h − 2 h 25 min:
    7. 45 min + 1 h 30 min + 2 h 55 min:
    8. 8 h 10 min − 4 h 45 min:

  5. Timetable questions

    1. Central to Airport (first bus):
    2. Mia needs Riverside by 10:00 am:
    3. 1:40 pm bus in 24-hour time and Airport arrival:
    4. Minutes from Park Road to Riverside:
    5. 1625 bus runs 20 min late → Airport arrival:
    6. Ava at Airport 11:15 am, caught 0845 Central bus:

  6. Problem solving

    1. Concert with setup and pack-down:
    2. Lena’s working time:
    3. Flight from Brisbane at 1355:
      1. Arrival time:
      2. 12-hour format:
    4. Alex, Belle, Carlos arrival times:

  7. Train schedule questions

    1. Express A, City Central to Terminal:
    2. Josie arrives 0930, fastest to Riverside:
    3. Express B vs Local C for City Central to Terminal:
    4. Express B in 12-hour time:
    5. Local D runs 15 min late, Terminal arrival:
    6. Express A departs 7:45 am; Hillside to Terminal:

  8. Time conversion table

    1. 0630 row:
    2. 2:45 pm row:
    3. 13 h 20 min row:
    4. 12:00 am row:
    5. 2115 row:

  9. Multi-step time calculations

    1. Excursion venue time:
    2. Movie end time:
    3. Three shifts:

  10. Time errors