Mathematics
1
Grade 5
Measurement: Time
Time and Calendar work: Fast Facts
Question 1:
Answer the questions below:
1.
There are ________________ days in a year.
2.
There are ________________ years in a Millennium.
3.
There are ____________ seconds in a minute and ___________ minutes in an hour.
4.
A leap year is every ___________ year and it has ___________ days.
5.
In a leap year, February has _______ days.
6.
There are ______________ hours in a day.
7.
A fortnight has __________ days and a week has ___________ days.
8.
The following months all have 31 days; ________________________________________
_____________________________________________________________________
9.
100 years is called a _________________.
10.
Time on a clock with a long hand and a short hand, is called ______________ time.
11.
Time on a clock with digits only, is called ________________ time.
12.
The long hand of the clock indicates _____________ and the short hand _____________.
13.
10 years is called a _________________.
14.
In a year, there are _______________ weeks.
15.
In a year, there are _______________ months.
Question 2:
Mental maths with Time
1. If the last leap year was in 2012, what year will the 5th leap year from then be? ________
2. If it takes mom 15 minutes to take you to school everyday, how many hours will it take her in
one week?
___________________________________________________________
3. How many seconds are there in one hour? ______________________________________
4. If you arrive at school at 7:15am in the morning and your mom picks you up at 3:05pm, how
long were you at school?
_________________________________________________
5. If your birthday is on 29 February, will you be able to celebrate your birthday in 2034? Give a
reason for your answer. _____________________________________________________
6. How many days are there in a decade?
_______________________________________
___________________________________________________________________________
7. The train usually leaves at 6:20 am, but today it has been delayed by 45 minutes. What time
will it leave today?
______________________________________________________
8. If you earn R2.00 everyday for July and August, how much money will you earn in total?
______________________________________________________________________
Mathematics
2
Grade 5
Measurement: Time
Question 3:
A
______________
Question 4:
1. 7:08 pm
= _________
Question 5:
Write down the Digital time of clock A, then add the time to the time in
Clock A and draw the new times on clocks B, C and D, as instructed.
B
The time in 55 min.
C
D
The time in 3 hrs 35 min.
The time 95 min ago.
Convert the following 12-hour times into 24-hour time;
2. 6:17am
3. 2:29 pm
= __________
= __________
4. 10:55 pm
= __________
Convert the following Minutes to Hours and Minutes;
1. 76 minutes = _______________
2.
267 minutes = _________________
3. 360 minutes = _______________
4.
61 minutes = __________________
5.
Three girls have to complete 40 lengths in the swimming pool. Susan took 35 minutes,
Joan took 42 minutes and Keisha took 57 minutes. How many hours did it take them
altogether to complete the 40 lengths?
___________________________________________________________________
___________________________________________________________________
___________________________________________________________________
Question 6:
1.
Calculations with Hours and Minutes;
Add 5 hours 51 minutes to the sum of 3
hours 13 minutes and 8 hours 7 minutes.
2.
Subtract 2 hours 32 minutes from the
sum of 1 hour 56 minutes and four and
a half hours.
Mathematics
3
Grade 5
Measurement: Time—Memo
Time and Calendar work: Fast Facts
Question 1:
Answer the questions below:
1.
There are 365 ¼ days in a year.
2.
There are 1 000 years in a Millennium.
3.
There are 60 seconds in a minute and 60 minutes in an hour.
4.
A leap year is every fourth year and it has 366 days.
5.
In a leap year, February has 29 days.
6.
There are 24 hours in a day.
7.
A fortnight has 14 days and a week has 7 days.
9.
The following months all have 31 days; January, March, May, July, August, October,
December.
100 years is called a Century.
10.
Time on a clock with a long hand and a short hand is called Analogue time.
11.
Time on a clock with digits is called Digital time.
12.
The long hand of the clock indicates minutes and the short hand hours.
13.
10 years is called a Decade.
14.
In a year, there are 52 or 53 weeks.
15.
In a year, there are 12 months.
Question 2:
Mental maths with Time
1. If the last leap year was in 2012, what year will the 5th leap year from then be? 2032
2. If it takes mom 15 minutes to take you to school everyday, how many hours will it take her in
one week?
15 min x 5 (school days) = 75 min = 1 hour and 15 minutes
3. How many seconds are there in one hour? 60 x 60 = 3 600 seconds in an hour
4. If you arrive at school at 7:15am in the morning and your mom picks you up at 3:05pm, how
long were you at school?
3:05 = 15:05
15:05 - 7:15 = 7 hours 50 minutes
5. If your birthday is on 29 February, will you be able to celebrate your birthday in 2034? Give a
reason for your answer. No, only if last two digits is divisible by 4 will it be a leap year.
6. How many days are there in a decade?
or 3 652 ½ days in a decade.
365 ¼ days in 1 year, 365,25 x 10 = 3 652,50 days
7. The train usually leaves at 6:20 am, but today it has been delayed by 45 minutes. What time
will it leave today?
6:20 + 45 min = 7:05 am
8. If you earn R2.00 everyday for July and August, how much money will you earn in total?
July and August have 31 days: 31 x R2 = R62.00
Mathematics
4
Grade 5
Measurement: Time—Memo
Question 3:
Write down the Digital time of clock A, then add the time to the time in
Clock A and draw the times on the other clocks, as instructed.
A
B
10:20
The time in 55 min.
Question 4:
C
The time in 3 hrs 35 min.
The time 95 min ago.
Convert the following 12-hour times into 24-hour time;
1. 7:08 pm
2. 6:17am
= 19:08
3. 2:29 pm
= 6:17
Question 5:
D
4. 10:55 pm
= 14:29
= 22:55
Convert the following Minutes to Hours and Minutes;
1. 76 minutes = 1 hr 16 min
2.
267 minutes = 4 hrs 27 min
3. 360 minutes = 3 hrs
4.
61 minutes = 1 hr 1 min
5.
Three girls have to complete 40 lengths in the swimming pool. Susan took 35 minutes,
Joan took 42 minutes and Keisha took 57 minutes. How many hours did it take them
altogether to complete the 40 lengths?
35 min + 42 min + 57 min = 134 minutes = 2 hrs 14 min
Question 6:
1.
Calculations with Hours and Minutes;
Add 5 hours 51 minutes to the sum of 3
hours 13 minutes and 8 hours 7 minutes.
5
51
+
3
13
+
8
7
16
71 (convert)
17 hrs 11 minutes
2.
Subtract 2 hours 32 minutes from the
sum of 1 hour 56 minutes and four and
a half hours.
+
1
4
56
30
5
86 (convert)
6 hrs 26 min
-
5
86 (borrowed
60 min)
6
2
26
32
3
54
3 hrs 54 min