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