KENDRIYA VIDYALAYA, GANDHIGRAM, DINDIGUL

NOTES

CLASS: IV SUB : MATHEMATICS TOPIC: TICK, TICK, TICK

IMPORTANT POINTS:

1. 1 MINUTE = 60 SECONDS2. 1 HOUR = 60 MINUTES3. 1 HOUR = 3600 SECONDS (60 X 60)4. 1 DAY = 24 HOURS5. 1 WEEK = 7 DAYS6. 1 MONTH = 30 OR 31 DAYS7. 1 YEAR = 52 WEEKS8. 1 YEAR = 12 M ONTHS9. 1 YEAR = 365 DAYS10. LEAP YEAR = 366 DAYS ( IT COMES ONCE IN 4 YEARS)

IN THE CLOCK THE SHORT HAND DENOTES HOUR HANDTHE LONG HAND DENOTES MINUTES HANDTHE RUNNING HAND DENOTES SECONDS HAND The sun rises in the morning at 6:00 The sun sets in the evening at 5:45

I.WRITE THE CORRECT TIME:

PINKI IS CORRECT.

II. DRAW THE HANDS:

.

a. 15 minsb. 20 minsc. 10 minsd. 35 mins

a. 6:20b. 8: 30c. 7:10d. 5:15

II. MONTHS:

There are 12 months in a year.They are:

January February March April May June July August September October

November December

1. Mark these activities in the correct order on Muniya’s time line:Ans: 5 mar – born 5 sep – ate banana 15 sep – first tooth 10 nov – crawled 20 nov – sat up 5 jan – stood up 2 feb – walked

2. How many months old was she when she got her first tooth?Ans: 6 months old

3. How old was muniya when,i.) She first sat up – 8 monthsii.) She got her first tooth – 6 months

4. What did she do first?Ans: Walking / Eating banana – Eating banana Crawling / Standing – crawling

III. WRITE IN FULL FORM:

1. 22.06.2015 = 22 june 20152. 15.01.1984 = 15 jan 19843. 30.10.1973 = 30 oct 19734. 23.03.2000 = 23 march 20005. 15.07.2012 = 15 july 2012

IV. WRITE IN SHORT FORM:

1. 3 FEB 2010 = 3.02.20102. 16 AUG 1999 = 16.08.19993. 30 APR 2001 = 30. 04.20014. 25 SEP 1925 = 25.09.19255. 26 NOV 1950 = 26.11.1950

V. WRITE IN A.M OR P.M:

12 Midnight to 11:59 Afternoon = A.M

12 Afternoon to 11:59 Midnight = P.M

1. 12:05 in the midnight = AM2. 5:00 in the evening = PM3. 9:25 in the Midnight = PM4. 12:00 in the Afternoon = PM5. 10:10 in the morning = AM

VI. RAILWAY TIMINGS:

Time by our watch is 12 hour clock.It is denoted as AM or PM.Time by the railway clock is 24 hour clock. It is denoted as Hours.

1. 1: 00 PM = 13 :00 hours2. 6:00 PM = 18: 00 hours3. 2:20 AM = 2:20 hours4. 7: 40 PM = 19:40 hours5. 9:00 AM = 9:00 hours6. 5:15 PM = 17:15 hours

VII. WORD PROBLEMS ON TIME:

1. School starts at 8:00 AM and closes at 3:00 PM.How many hours does the school open for?Ans: school is opening for 7 hours (from 8:00 to 3:00)

2. What date it will be?i.) 5 days after 29 th August = 3 sepii.) 3 days before 30 th oct = 27 th oct

3. Nipun’s grandmother arrived on june 25 and left on july 18. How long did she stay?Ans: She arrived on jun 25 She left on july 18 June = 6 days July = 18 days Totally 24 days

4. Count the number of days: From 15th jan to 20th febAns: jan = 17 Feb = 20 Totally = 37 days.

5. From 4th April to August 16th

Ans: April = 27 May = 31 June = 30 July = 31 August = 16 Totally = 135 days.