time

1. Time
CB/IV/1718 of 10
Subject: Mathematics
Grade: IV
Topic: Time
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2. Time
CB/IV/1718 of 10
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3. Time
CB/IV/1718 of 10
3
3 o’clock
3:00
5 o’clock
5:00

4. Time
CB/IV/1718 of 10
4
half past 4
4:30
four thirty
half past 9
9:30
nine thirty

5. Time
CB/IV/1718 of 10
5
quarter past 10
10:15
quarter past 2
2:15

6. Time
CB/IV/1718 of 10
6
quarter to 7
6:45
quarter to 1
12:45

7. Time
CB/IV/1718 of 10
7
20 minutes past 6 o’clock
40 minutes to 7 o’clock
6:20
50 minutes past 11 o’clock
10 minutes to 12 o’clock
11:50

8. Time
CB/IV/1718 of 10
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12:00 3:00 6:00 9:00 12:00 3:00 6:00 9:00 12:00
a.m. p.m.
Mid night Mid night
Mid day
ante meridiem post meridiem

9. Time
CB/IV/1718 of 10
• a.m. stands for ante meridiem and p.m. stands for post
meridiem.
• a.m. for time after 12 midnight and before 12 noon.
• p.m. for time after 12 noon and before 12 midnight.
• We do not write 12 a.m. or 12 p.m. We use the words 12 noon
and 12 midnight.
• We change a.m. to p.m. or vice a versa when we cross 12
noon or 12 midnight.
• For example: one hour before 1:15 p.m. is 12:15 a.m. and 2
hours after 11:30 a.m. is 1:30 p.m.
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10. Time
CB/IV/1718 of 10
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