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KENDRIYA VIDYALAYA, GANDHIGRAM, DINDIGULNOTES CLASS: IV SUB : MATHEMATICS TOPIC: TICK, TICK, TICKIMPORTANT POINTS:1 MINUTE = 60 SECONDS1 HOUR = 60 MINUTES1 HOUR = 3600 SECONDS (60 X 60)1 DAY = 24 HOURS1 WEEK = 7 DAYS1 MONTH = 30 OR 31 DAYS1 YEAR = 52 WEEKS1 YEAR = 12 M ONTHS1 YEAR = 365 DAYSLEAP 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 HANDThe sun rises in the morning at 6:00 The sun sets in the evening at 5:45I.WRITE THE CORRECT TIME:PINKI IS CORRECT.II. DRAW THE HANDS:. 15 mins20 mins10 mins35 mins6:208: 307:105:15II. MONTHS: There are 12 months in a year.They are:JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecemberMark 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 – walkedHow many months old was she when she got her first tooth?Ans: 6 months oldHow old was muniya when,She first sat up – 8 monthsShe got her first tooth – 6 monthsWhat did she do first?Ans: Walking / Eating banana – Eating banana Crawling / Standing – crawlingIII. WRITE IN FULL FORM: 22.06.2015 = 22 june 201515.01.1984 = 15 jan 198430.10.1973 = 30 oct 197323.03.2000 = 23 march 200015.07.2012 = 15 july 2012IV. WRITE IN SHORT FORM:3 FEB 2010 = 3.02.201016 AUG 1999 = 16.08.199930 APR 2001 = 30. 04.200125 SEP 1925 = 25.09.192526 NOV 1950 = 26.11.1950V. WRITE IN A.M OR P.M: 12 Midnight to 11:59 Afternoon = A.M12 Afternoon to 11:59 Midnight = P.M12:05 in the midnight = AM5:00 in the evening = PM9:25 in the Midnight = PM12:00 in the Afternoon = PM10:10 in the morning = AMVI. 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: 00 PM = 13 :00 hours6:00 PM = 18: 00 hours2:20 AM = 2:20 hours7: 40 PM = 19:40 hours9:00 AM = 9:00 hours5:15 PM = 17:15 hoursVII. WORD PROBLEMS ON TIME: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)What date it will be?5 days after 29 th August = 3 sep3 days before 30 th oct = 27 th octNipun’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 daysCount the number of days: From 15th jan to 20th febAns: jan = 17 Feb = 20 Totally = 37 days.From 4th April to August 16thAns: April = 27 May = 31 June = 30 July = 31 August = 16 Totally = 135 days. ................
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