Page 173 - Math Genius C2

E:\Working\Orange_Education\Math_Genius_2\Open_Files\Chap_10
\ 26-Sep-2025 Bharat Arora Proof-10 Reader’s Sign _______________________ Date __________

CloCk Rohan, do you know To read the time
how to read the correctly, you must
Rohan’s mother is buying a beautiful time on the clock? know about the clock.

wall clock for her house.

A clock tells us the time. It has two

hands— a longer hand and a shorter

hand. The longer hand is called the

minute hand and the shorter hand is

called the hour hand. The face of the

clock is called its dial. The dial of the I have learnt
reading time in
clock is divided into 12 equal divisions, complete hours only.
marked with numbers 1 to 12 on it.

Reading Time when the Minute Hand is at 12

In the first clock shown here, the hour hand is at 5
11 12 1 11 12 1
and the minute hand is at 12. We say that the time is 10 2 10 2
9 3 9 3
5 o’clock or 5:00. 8 4 8 4
7 6 5 7 6 5
We know that the hour hand takes one hour to move

from one number to the next. If it has gone from 5 to
6, it means one hour has passed.

When the minute hand completes one round around the dial, the hour hand moves

from 5 to 6. Thus, the time is 6 o’clock or 6:00.

Understanding Time for Morning or Evening

Rohan usually has his breakfast at around 7 We use a.m. – From

o’clock in the morning. He does self study at about 11 12 1 midnight to noon
10 2 and p.m. – From
7 o’clock in the evening. How will we understand 9 3 noon to midnight
8 4
here that the clock is showing the time in the 7 6 5

morning or evening?

To overcome this confusion, we use a.m. (Ante
meridiem) and p.m. (Post meridiem).

Thus, Rohan’s breakfast time is 7:00 a.m. and his self study time is 7:00 p.m.

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