Page 182 - Math Genius C3

E:\Working\Orange_Education\Math_Genius_3_(08-10-2025)\Open_Files\CHAP_10
\ 08-Oct-2025 Bharat Arora Proof-10 Reader’s Sign _______________________ Date __________

A.M. And P.M.

As explained earlier, the hour hand goes round the dial twice in one day. So it shows the
same time twice every day.

• The time from 12 o’clock midnight to 11:59 in the morning is shown by the small
letters ‘a.m.’ (ante meridiem).

• The time from 12 o’clock noon to 11:59 at night is shown by the small letters ‘p.m.’

(post meridiem).

Noon Midnight Midnight Noon Get it right!

11 a.m. 1 a.m. 11 p.m. 1 p.m. 12:00 day-time 
10 a.m. 11 12 1 2 a.m. 10 p.m. 11 12 1 2 p.m.
10 2 10 2 12 noon 
9 a.m. 9 3 3 a.m. 9 p.m. 9 3 3 p.m.
8 4 8 4 12:00 night-time 
8 a.m. 7 6 5 4 a.m. 8 p.m. 7 6 5 4 p.m.
7 a.m. 5 a.m. 7 p.m. 5 p.m. 12 midnight 
6 a.m. 6 p.m.

12
11 1
11 12 1 10 2
10 2 9 3 p.m.
9 3 a.m. 8 4
8 4 7 6 5
7 6 5
Sonia eats breakfast at 8:00 a.m. Mona watches TV at 8:00 p.m.

TiMe in seconds

Clocks have a third hand too. Second

It is a very thin and long hand. It is called the second hand. 10 11 12 1 2 hand

9 3
It moves faster than the minute hand. 8 4
Hour 7 6 5 Minute
It completes one round in 1 minute or 60 seconds. So, hand hand

1 minute = 60 seconds

Think Tank Logical Thinking
How many seconds are there in 1 hour? _____________ seconds.

180 Mathematics-3