Balbharati Solutions Class 5 Mathematics Measuring Time
Welcome to NCTB Solutions. Here with this post we are going to help 5th class students for the Solutions of Balbharati Class 5 Math Book, Problem Set 43, 44 and 45, Measuring Time. Here students can easily find step by step solutions of all the problems for Measuring Time. Also our Expert Mathematic Teacher’s solved all the problems with easily understandable methods with proper guidance so that all the students can understand easily. Here in this post students will get Measuring Time solutions. Here all the solutions are based on Maharashtra State Board latest syllabus.
Measuring Time all Question Solutions :
Problem Set 43 :
Question no – (1)
Solution :
Clock – (i)
See the above clock
Their are two hands minute hand and hour hand
The hour hand is on 2
And the minute hand on 5
It means that 5×5 = 25 min
Hence, the answer is 25 min past 2
Clock – (ii)
See the above clock
Their are two hands minute hand and hour hand
The hour hand is on between 7&8
And the minute hand on 10
It means that 5×10 = 50 min
So, the answer is 50 min past 7
Clock – (iii)
See the above clock
Their are two hands minute hand and hour hand
The hour hand is on 8
And the minute hand on 1
It means that 5×1 = 5 min
Hence, the answer is 5 min past 8
Clock – (iv)
See the above clock
Their are two hands minute hand and hour hand
The hour hand is on 4 & 5
And the minute hand on 5
It means that 5×8 = 40 min
So, the answer is 40 min past 4
Question no – (2)
Solution :
(1) Four thirty
We know, Time given is Four thirty
The hour hand is on 4
And the minute hand on 5 × 6 = 30
(2) Quarter past nine
We know, Time given is
The hour hand is on 9
And the minute hand on 3 because 5 × 3 = 15
(3) Quarter to five
We know, Time given is
The hour hand is in between 4 and 5
And the minute hand on 9 because 5 × 9 = 45
(4) 20 minutes past 11
We know, Time given is
The hour hand is in between 11 and 12
And the minute hand on 4
Question no – (3)
Solution :
The bus that leaves Nashik at 5 o’clock in the morning
We can write 5 o’clock as 5 : 00
The bus reaches Pune that same day at ten thirty in the morning
We can write ten thirty as 10 : 30
Hours :
10
-5
——————–
5
Minute :
30
– 00
——————–
30
Hence, the bus journey take 5 : 30 hour.
Question no – (4)
Solution :
A play that was to start at nine fifteen at night
We can write nine fifteen as 9 : 15
A play was delayed by half an hour
We can write as 0 : 30
We add the delayed time with starting time
Hours :
9
+
——————–
9
Minute :
15
+ 30
——————–
45
Therefore, play start at 9:45 o’clock.
Question no – (5)
Solution :
A train leaves Mumbai at ten fifteen at night
We can write ten fifteen as 10 : 15 O’clock
A train reaches Nagpur at one forty the next afternoon
We can write one forty as 1 : 40 O’clock
Hours in between ten fifteen at night to 12 at night is –
Hours :
12
-1
——————–
1
Minute :
00
– 15
——————–
45
Here we give borrow 1 hour because 15 is not subtracted from 00
So, Hours in between ten fifteen at night to 12 at night is 1:45 hours
And the hours between 12 at night to one forty the next afternoon
If the clock is 24 hour clock then 1:40 at at afternoon can be written as 13:40
Hours :
1
-13
——————–
14
Minute :
45
– 40
——————–
85
60 min = 1 hour
So, here 14 + 1 = 15 hours
remaining 25 min from 85 min
15 : 25 hours train journey takes.
Problem Set 44 :
Question no – (1)
Solution :
(1) 30 minutes past 10 in the morning
In 12 hour clock the clock is divide into two parts
One part is from 12 O’clock at night to 12’O clock at afternoon
And second part is from 12 O’clock at afternoon to 12’O clock at night
In 24 hour clock after 12 O’clock at afternoon instead of starting 1,2,3…..
Continue with 13,14,15…….
So, 30 minutes past 10 in the morning shows the time in 24 hour clock as 10:30
(2) 10 minutes past 8 in the morning
In 12 hour clock the clock is divide into two parts
One part is from 12 O’clock at night to 12’O clock at afternoon
And second part is from 12 O’clock at afternoon to 12’O clock at night
In 24 hour clock after 12 O’clock at afternoon instead of starting 1,2,3…..
Continue with 13,14,15…….
So, 10 minutes past 8 in the morning shows the time in 24 hour clock as 8:30
(3) 20 minutes past 1 in the afternoon
In 12 hour clock the clock is divide into two parts
One part is from 12 O’clock at night to 12’O clock at afternoon
And second part is from 12 O’clock at afternoon to 12’O clock at night
In 24 hour clock after 12 O’clock at afternoon instead of starting 1,2,3…..
Continue with 13,14,15…….
So, 20 minutes past 1 in the afternoon shows the time in 24 hour clock as 13:20
(4) 40 minutes past 5 in the evening
In 12 hour clock the clock is divide into two parts
One part is from 12 O’clock at night to 12’O clock at afternoon
And second part is from 12 O’clock at afternoon to 12’O clock at night
In 24 hour clock after 12 O’clock at afternoon instead of starting 1,2,3…..
Continue with 13,14,15…….
So, 40 minutes past 5 in the evening shows the time in 24 hour clock as 17:40
Question no – (2)
Solution :
In 12 hour clock the clock is divide into two parts
One part is from 12 O’clock at night to 12’O clock at afternoon
And second part is from 12 O’clock at afternoon to 12’O clock at night
In 24 hour clock after 12 O’clock at afternoon instead of starting 1, 2, 3…..
Continue with 13, 14, 15…….
Pm means after 12 O’clock at afternoon
Am means before 12 O’clock at afternoon
For using above information convert time in 24 hour clock
9 : 10 am means 9 : 10
2 : 10 pm means 14 : 10
5 : 25 pm means 17 : 25
11 : 10 pm means 23 : 10
7 : 25 am means 7 : 25
9 : 10 am → 9 : 10
2 : 10 pm → 14 : 10
5 : 25 pm → 17 : 25
11 : 10 pm → 23 : 10
7 : 25 am → 7 : 25
Problem Set 45 :
Question no – (1)
Solution :
(1) 2 hours 30 minutes can be written as 2:30
4 hours 55 minutes can be written as 4:55
Hours :
2
+ 4
——————–
6
Minutes :
30
+ 55
——————–
85
That’s mean 7 h 25 min.
Here we know,
60 min means 1 hour so we add 1 hour in 6 hours
6 + 1 = 7
So, 85 – 60 = 25 min
∴ Addition of 2 hours 30 minutes + 4 hours 55 minutes is 7 hours 25 minutes
(2) 3 hours 50 minutes can be written as 3 : 50
4 hours 20 minutes can be written as 4:20
Hours :
3
+ 4
——————–
7
Minutes :
50
+ 20
——————–
70
That’s mean, 8 h 10 min.
Here we know,
60 min means 1 hour so we add 1 hour in 7 hours
7 + 1 = 8
So, 70 – 60 = 10 min
∴ Addition of 2 hours 30 minutes + 4 hours 55 minutes is 8 hours 10 minutes.
(3) 3 hours 45 minutes can be written as 3:45
1 hours 35 minutes can be written as 1:35
Hours :
3
+1
——————–
4
Minutes :
45
+ 35
——————–
80
That’s mean, 5 ;h 20 min.
Here we know,
60 min means 1 hour so we add 1 hour in 4 hours
4 + 1 = 5
So, 80 – 60 = 20 min
Addition of 3 hours 45 minutes + 1 hour 35 minute is 5 hours 20 minutes.
(4) 4 hours 15 minutes can be written as 4:15
2 hours 50 minutes can be written as 2:50
Hours :
4
+ 2
——————–
6
Minutes :
15
+50
——————–
65
So, time is 7 h 05 min.
Here, we know,
60 min means 1 hour so we add 1 hour in 6 hours
6 + 1 = 7
So, 65 – 60 = 5 min
∴ Addition of 4 hours 15 minutes + 2 hours 50 minutes is 7 hours 5 minutes.
Question no – (2)
Solution :
(1) 3 hours 10 minutes can be written as 3 : 10
2 hours 40 minutes can be written as 2:40
Hours :
3
– 2
——————–
0
Minutes :
10
– 40
——————–
30
That’s mean, 0 h 30 min.
Here we know,
60 min means 1 hour so we add 1 hour in 10 min
because 40 can not subtracted from 10
So, the answer of 3 hours 10 minutes – 2 hours 40 minutes is 00 hours 30 minutes.
Question no – (3)
Solution :
A government office opens at 7 in the morning
A government office closes at 3 in the afternoon
In 24 hour clock 3 O’ clock in the afternoon can be written as 15 O’clock
Hours :
15
-7
——————–
8
Minutes :
00
– 00
——————–
00
Therefore, the government office open 8 hours
Question no – (4)
Solution :
A movie starts at 45 minutes past 3 in the afternoon
In 24 hour clock 45 minutes past 3 in the afternoon can be written as 15:45
A movie finishes two and a half hours later
It can be written as 2:30
For calculating movie end time add starting time with movie hour,
Hours :
15
+2
——————–
17
Minutes :
45
+ 30
——————–
75
That’s mean, 18 h 15 min.
Here we know,
60 min means 1 hour so we add 1 hour in 18 hour
18 + 1 = 6
So, 75 – 60 = 15 min
In 12 hour clock 18:15 can be written as 6 : 15 in evening
So, the movie end time is 6 :15 evening.
Question no – (5)
Solution :
Sakharam was ploughing the field from 8 in the morning
At 12:30 in the afternoon he stopped and started for home
Sakharam reached home at 1:30
For calculating hours Sakharam was ploughing the field
Hours :
12
-8
——————–
4
Minutes :
30
-00
——————–
30
4:30 hours Sakharam was ploughing the field
In 24 hour clock 1:30 O’clock in the afternoon can be written as 13:30 O’clock
For calculating hours to reach home from the field
Hours :
13
-12
——————–
1
Minutes :
30
– 30
——————–
00
1 hour take reach home from the field
So, the answer is –
4 : 30 hours Sakharam was ploughing the field
1 hour take reach home from the field.
Question no – (6)
Solution :
Rambhau started the water pump at ten thirty at night
Rambhau put it off the same night at a quarter to twelve.
ten thirty can be written as 10:30
quarter to twelve can be written as 11:45
For calculating hours the water pump on
Hours :
11
-10
——————–
1
Minutes :
45
-30
——————–
15
So, the answer is –
1 : 15 hour the water pump on.
Question no – (7)
Solution :
For calculating total teaching time
We add 2:25 and 1 : 45
Hours :
2
+ 1
——————–
3
Minutes :
25
+ 45
——————–
70
That’s mean, 4 h 10 min.
Here we know,
60 min means 1 hour so we add 1 hour in 3 hours
3 + 1 = 4
So, 70 – 60 = 10 min
Geeta teaching 4 hours 10 minute.
Question no – (8)
Solution :
In 24 hour clock 4:30 O’clock in the afternoon can be written as 16:30 O’clock
For calculating how many hours the bank open
Hours :
16
-10
——————–
6
Minutes :
30
– 00
——————–
30
So, the bank open 6 hours and 30 minutes.
Question no – (9)
Solution :
In 24 hour clock 10 O’clock in the afternoon can be written as 22 O’clock
For calculating how many hours the shop is open
Hours :
22
-9
——————–
12
Minutes :
00
– 30
——————–
30
Here we know,
60 min means 1 hour so we add 1 hour in 00 min because 30 can not subtracted from 00
Thus, the bank open 12 hours and 30 minutes.
Question no – (10)
Solution :
The Maharashtra Express leaving from Kolhapur at 15 : 30
The Maharashtra Express arrives at Gondia the next day at 20:15
We know,
At 15:30 to next day 15:30 24 hours
And next hour calculate using
Hours :
20
-15
——————–
4
Minutes
15
-30
——————–
45
So, total hours taken by train from Kolhapur to Gondia is,
Hours
24
+ 4
——————–
28
Minutes :
00
+ 45
——————–
45
Therefore, total hours taken by train from Kolhapur to Gondia is 28 hours and 45 min
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