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E:\Working\Orange_Education\TouchPad_Maths_4\Open_Files\Chap_11\Chap_11
\ 10-Nov-2025 Bharat Arora Proof-8 Reader’s Sign _______________________ Date __________

2. Write the following times using a.m. or p.m.

a. 6 o’clock in the morning ________ b. 11:15 at night ________
c. 7:10 in the evening ________ d. 1:30 in afternoon ________

e. 2:50 late at night ________ f. 11:55 at night ________

g. 5:45 in the evening ________ h. 6:32 in the morning ________

3. Write the time 1 hour before:

a. 7:40 a.m. ________ b. 1:00 p.m. ________ c. 12:30 a.m. ________
d. 12:15 p.m. ________ e. 5:05 p.m. ________ f. 2:00 a.m. ________

4. What is the time after 1 hour?

a. 2:05 p.m. ________ b. 4:15 a.m. ________ c. 6:00 p.m. ________

d. 11:00 p.m. ________ e. 8:30 a.m. ________ f. 5:40 p.m. ________

5. Write the missing time in each sequence.

a. 8:40 a.m., 10:40 a.m., _____, _____ b. 6:10 p.m., 10:10 p.m., _____, _____

24-houR CloCk

Kittu is going to her Nani’s house by train.

Looking at the ticket, she was a little surprised.
Do you know why she was surprised?
She was surprised to see the time on it. It
was written as 16:00. She asked her mother,

‘When is it 16 o’clock? There are only 12
numbers on a clock, so how can it be 16?’
Mother: (smiling) The clock with 12 numbers is a 12-hour clock.

Similarly, there is a 24-hour clock which shows the 24 hours of a
day. The time shown on this ticket is based on the 24-hour clock.
After 12 noon, 1:00 p.m. is counted as 13, 2:00 p.m. as 14 and so on.

Kittu: Oh, so 16:00 is 4:00 p.m.

Mother: Yes, you are right. Analog clock
Kittu: So, 8:00 p.m. is 20:00 p.m., 11:00 p.m. is 23:00 p.m. and
12:00 midnight is 24:00 p.m. 20 : 1 1

Mother: Hold on! 24-hour times are neither a.m. nor p.m. They
are expressed by saying ‘hours’. Midnight is represented as 24:00 Digital clock
hours (the end of the day) as well as 00:00 hours (the start of the next day).

184 Mathematics 4