Page 129 - Start Up Mathematics_3

9

Time

Let’s Recall ...

A clock face has markings with numbers from 1 to 12 which denote the
hours. The smaller markings between any two hour markings denote
the minutes.

If the hour hand is at any number and the minute hand is at 12, we add o‘clock after
the number to say the time. For example, if the hour hand is at 4 and the minute

hand is at 12, the time is 4 o‘clock or 4:00.
To read the minute hand, we multiply the number at the bigger marking by 5. For
example, if the minute hand is at 2, it is 2 × 5 = 10 minutes.

The minute hand is faster than the hour hand. While the hour hand covers only
5 small markings from one number to the other in one hour, the minute hand takes
one full circle of the clock face in the same time. So, 1 hour = 60 minutes.

Quarter Past 11 12 1

When the minute hand is at 3, we say quarter past. 10 2
9 3
In the given clock, the time is 7:15 or quarter past 7. 8 4
7 5
6

Half Past

When the minute hand is at 6, it shows 30 minutes. It is called 11 12 1
half past. 10 2
9 3
In the given clock, the time is 1:30 or half past 1. 8 4

7 5
6
Quarter To

Once the minute hand crosses the 6 mark, the hour hand is read
by the bigger marking the hand is about to reach. When the 11 12 1
minute hand is at 9, it shows 45 minutes. It is called quarter to. 10 2

9 3
In the given clock, the minute hand is at 9 and the hour hand 4
has passed 6 and is about to reach 7. 8 7 5
6
So, the time is 6:45 or quarter to 7.

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