6th Maths : Term 2 Unit 2 : Measurements : Exercise 2.2 : Text Book Back Exercises Questions with Answers, Solution

**Exercise
2.2**

**1.
Say the time in two ways:**

**Answer:**

(i) 10:15 hours; quarter past 10

(ii) 6:45 hours; quarter to 7

(iii) 4:10 hours; 10 minutes past 4

(iv) 3:30 hours; half past 3

(v) 9:40 hours; 20 minutes to 10

**2.
Match the following:**

(i) 9.55 a. 20
minutes past 2

(ii) 11.50 b. quarter past 4

(iii) 4.15 c. quarter to 8

(iv) 7.45 d. 5 minutes to 10

(v) 2.20 e. 10
minutes to 12

*Answer:***(i) d (ii) e (iii) b (iv) c (v) a**

(i) 9.55 d. 5 minutes to 10

(ii) 11.50 e. 10 minutes to 12

(iii) 4.15 b. quarter past 4

(iv) 7.45 c. quarter to 8

(v) 2.20 a. 20 minutes past 2

**3.
Convert the following:**

**(i)
20 minutes into seconds**

20 minutes = (20 × 60) seconds

__60 seconds = 1 mt__

= 1200 seconds

**(ii)
5 hours 35 minutes 40 seconds into seconds**

5 hours 35 minutes 40 seconds

(5 × 60 × 60) seconds + (35 × 60) seconds + 40 seconds

18000 seconds + 2100 seconds + 40 seconds

20140 seconds

**(iii)
3 ½ hours into minutes**

3 ½ hours = 3 hours 30 minutes

= (3 × 60 ) minutes + 30 minutes

= 180 minutes + 30 minutes 9 hrs

'= 210 minutes

**(iv)
580 minutes into hours**

580 minutes = (580 ÷ 60)
hours

= 9 hours 40 minutes.

**(v)
25200 seconds into hours**

25200 seconds = (25200 ÷ 3600) hours

= 7 hours.

**4.
The duration of electricity consumed by the farmer for his pumpset on Monday and
Tuesday was 7 hours 20 minutes 35 seconds and 3 hours 44 minutes 50 seconds respectively.
Find the total duration of consumption of electricity.**

**Total duration of
consumption of electricity = 11 hrs 5 mts 25 secs.**

** **

**5.
Subtract 10 hours 20 minutes 35 seconds from 12 hours 18 minutes 40 seconds**

**1 hour 58 minutes 5
seconds. **

** **

**6.
Change the following into 12 hour format**

**(i)
02:00 hours **

**(ii)
08:45 hours**

**(iii)
21:10 hours **

**(iv)
11:20 hours **

**(v)
00:00 hours**

**(i) 02:00 hours** = 2 a.m

**(ii) 08:45 hours** = 8:45 a.m

**(iii) 21:10 hours** = 9:10 p.m

**(iv) 11:20 hours** = 11:20 a.m

**(v) 00:00 hours **= 12 midnight

** **

**7.
Change the following into 24 hour format**

**(i)
3.15 a.m **

**(iii)
12.35 p.m**

**(iv)
12.00 noon**

** (v) 12.00 midnight**

**(i) 3.15 a.m** = 3:15 hours

**(ii) 12.35 p.m** = 12:35 hours

**(iii) 12.00 noon** = 12:00 hours

**(iv) 12.00 midnight** = 00:00 (or) 24:00
hours

** **

**8.
Calculate the duration of time**

**(i)
from 5.30 a.m to 12.40 p.m**

12.40 p.m = 12.40 hours

5.30 a.m = 5.30 hours

**Duration of Time = 7.10 hours**

**(ii)
from 1.30 p.m to 10.25 p.m**

10.25 p.m = 22.25 hours (10.25 + 12.00) hrs.

1.30 a.m = 13.30 hours
(1.30 + 12.00) hrs.

**Duration of Time = 8.55 hours**

**(iii)
from 20:00 hours to 4:00 hours**

4:00 hours = 28.00 hours (4 + 24) hrs.

20 hours = 20.00 hours

**Duration of Time = 8.00 hours**

Duration of Time = 8 hours

**(iv)
from 17:00 hours to 5:15 hours**

5:15 hours = 29.15 hours (5.15 + 24) hours

17:00 hours = 17.00 hours

**Duration of Time = 12.15 hours**

**Duration of Time = 12 hours 15 minutes**

** **

**9.
The departure and arrival timing of the Vaigai Superfast Express (No. 12635) from
Chennai Egmore to Madurai Junction are given. Read the details and answer the following
**

**(i)
At what time does the Vaigai Express start from Chennai and arrive at Madurai?**

Vaigai Express starts at
13:40 hours from Chennai and arrives at 21:20 hours at Madurai.

**(ii)
How many halts are there between Chennai and Madurai?**

8 halts are there between
Chennai and Madurai.

**(iii)
How long does the train halt at the Villupuram Junction?**

The train halts at Villupuram junction = 15:55 − 15:50 = 0.05
hours

= 5 minutes

**(iv)
At what time does the train come to Sholavandan?**

The train comes to
Sholavandan at 20:34 hours.

**(v)
Find the journey time from Chennai Egmore to Madurai?**

**Total journey time = 7
40**

**Total journey time = 7
hours 40 minutes**

** **

**10.
Manickam joined a chess class on 20.02.2017 and due to exam, he left practice after
20 days. Again he continued practice from 10.07.2017 to 31.03.2018. Calculate how
many days did he practice?**

**Months : Days**

July (31−9) … 22

August … 31

September … 30

October … 31

November … 30

December … 31

January … 31

February … 28 (2018 is an ordinary year)

March … 31

**Total : 265**

Number of days practiced from 20−02−2017 ... 20

**Total number of days he practiced 285**

** **

**11.
A clock gains 3 minutes every hour. If the clock is set correctly at 5 a.m, find
the time shown by the clock at 7 p.m?**

7 p.m = 19 hours (7+12) hours

5 a.m. = 5 hours

**Duration = 14 hours**

For 1 hour clock gains = 3 minutes

For 14 hours the clock gains =14 × 3 minutes

= 42 minutes

**At 7 p.m the clock shows the time 7 hours 42 minutes.**

** **

**12.
Find the number of days between the Republic day and Kalvi Valarchi Day in 2020.**

Republic day January 26th

Kalvi Valarchi Day July 15th

**Months : Days**

January (31 − 25) … 6

February … 29 (2020 is a leap year)

March … 31

April … 30

May … 31

June ... 30

July ... 15

**Total number of Days ... 172**

** **

**13.
If 11th of January 2018 is Thursday , what is the day on 20th July of the same year**

**Months : Days**

January (31−10) … 21

February … 28 (2018 is an ordinary year)

March … 31

April … 30

May … 31

June … 30

July … 19

**Total Days ... 190**

190 days ÷ 7 = 27 weeks + 1 day.

The next day of Thursday is Friday.

July 20th is the Friday.

** **

**14.
(i) Convert 480 days into years.**

480 days = (480 ÷ 365) years

= 1 year 115 days

= 1 year (115 ÷ 30) months

= 1 year 3 months 25 days

**480 days = 1 year 3 months 25 days**

**(ii) Convert 38 months into years.**

38 months = (38 ÷ 12) years

= 3 years 2 months

**38 months = 3 years 2 months**

** **

**15.
Calculate your age as on 01.06.2018**

Date of Birth :
01−01−2006

From 2006 to 2018 : 12
years

From January to May : 5 months

June : 1 day

**My age is 12 years 5 months 1 day**

** **

__Objective
Type Questions__

**16.
2 days = _{———} hours. **

a) 38

b) 48

c) 28

d) 40

*Answer:***b) 48**

**17.
3 weeks = _{——— }days **

a) 21

b) 7

c) 14

d) 28

*Answer:***a) 21**

**18.
Number of ordinary years between two consecutive leap years is _{——————}**

a) 4 years

b) 2 years

c) 1 year

d) 3 years

*Answer:***d) 3 years**

**19.
What time will it be 5 hours after 22:35 hours**

a) 2:30 hours

b) 3:35 hours

c) 4:35 hours

d) 5:35 hours

*Answer:***b) 3:35 hours **

**20.
2 ½ years is equal to _{—————— }months. **

a) 25

b) 30

c) 24

d) 5

*Answer:***b) 30**

__ANSWERS: __

__Exercise: 2.2__

**1. i) 10:15 hours;
quarter past 10**

**ii) 6:45 hours ;
quarter to 7**

**iii) 4:10 hours ;
10 minutes past 4**

**iv) 3:30 hours;
half past 3**

**v) 9:40 hours; 20
minutes to 10;**

**2. i. (d) ii. (e) iii. (b) iv. (c) v. (a)**

**3. i) 1200
seconds ii) 20140 seconds iii) 210 minutes iv) 9 hours 40 minutes v) 7 hours**

**4. 11 hours 5
minutes 25 seconds**

**5. 1 hour 58
minutes 5 seconds**

**6. i) 2 a.m ii) 8:45 a.m iii) 9:10 p.m iv) 11:20 a.m v) 12 midnight **

**7. i) 3:15
hours ii) 12:35 hours iii) 12:00
hours iv) 00:00 or 24:00 hours**

**8. i) 7 hours 10
minutes**

**ii) 8 hours 55
minutes**

**iii) 8 hours**

**iv) 12 hours 15
minutes**

**9. i) 13:40 hours ,
21:20 hours ii) 8 halts iii) 5
minutes iv) 20:34 hours v) 7 hours 40
minutes**

**10. 285 days **

**11. 7 hour 42
minutes**

**12. 172 days **

**13. Friday**

**14. (i) 1 year 3
months 25 days (ii) 3 years 2 months**

**Objective Type
Questions**

**16. (b) 48 **

**17. (a) 21**

**18. (d) 3 **

**19. (b) 3:35 hours **

**20. (b) 30**

Tags : Questions with Answers, Solution | Measurements | Term 2 Chapter 2 | 6th Maths , 6th Maths : Term 2 Unit 2 : Measurements

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6th Maths : Term 2 Unit 2 : Measurements : Exercise 2.2 | Questions with Answers, Solution | Measurements | Term 2 Chapter 2 | 6th Maths

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