1) Add the hours and minutes to each of these times:
a) 7:10am + 1h 30min → 8:40am
b) 5:15pm + 2h 5min → 7:20pm
c) 10:55am + 3h → 1:55pm
d) 12:35pm + 45min → 1:20pm
e) 10:50am + 2h 15min → 1:05pm
f) 9:45am + 3h 10min → 12:55pm
2) Subtract the hours and minutes from each of these times:
a) 9:20am – 2h 10min → 7:10am
b) 1:35pm – 2h 15min → 11:20am
c) 11:40pm – 1h 15min → 10:25pm
d) 2:15pm – 5h → 9:15am
e) 3:05pm – 2h 20min → 12:45pm
f) 1:20pm – 2h 40min → 10:40am
3) Work out how long the time interval is.
1:25pm to 3:35pm time interval is 2 hours 10 minutes
3:20pm to 4:50pm time interval is 1 hours 30 minutes
8:25am to 10:00am time interval is 1 hours 35 minutes
12:50pm to 4:10pm time interval is 3 hours 20 minutes
8:50pm to 11:30pm time interval is 2 hours 40 minutes
4) Write in the missing time:
a) 1 hour and 25 minutes earlier than 9:00am is 7:35am.
b) 2 hours and 30 minutes later than 4:45pm is 6:15pm.
c) 1 hour and 15 minutes later than 11:10am is 12:25pm.
d) 50 minutes earlier than 12:25pm is 11:35am.
e) 4 hours and 5 minutes later than 8:35am is 12:40pm.
Parent Tip: Review the logic above to help your child master the concept of timed subtraction worksheet for.
