{"id":29857,"date":"2019-06-09T10:35:55","date_gmt":"2019-06-09T05:05:55","guid":{"rendered":"https:\/\/www.cbselabs.com\/?p=29857"},"modified":"2021-09-18T15:19:46","modified_gmt":"2021-09-18T09:49:46","slug":"ncert-solutions-for-class-4-mathematics-unit-4-tick-tick-tick","status":"publish","type":"post","link":"https:\/\/www.cbselabs.com\/ncert-solutions-for-class-4-mathematics-unit-4-tick-tick-tick\/","title":{"rendered":"NCERT Solutions for Class 4 Mathematics Unit-4 Tick-Tick-Tick"},"content":{"rendered":"
NCERT Textbook Page 36<\/strong><\/span> NCERT Textbook Page 37<\/strong><\/span> 3. How long is your lunch break?<\/strong><\/span> 4. How long is your games period?<\/strong><\/span> 5. Is it the same as all the other periods?<\/strong><\/span> 6. The games period and lunch break seem very short! Aren\u2019t they?<\/strong><\/span> NCERT Textbook Page 40<\/strong><\/span> Activity Time<\/strong> Write more such fun activities in this column. 2. Here is another challenge for you. How long can you_________<\/strong><\/span> 3. How long do you take to________<\/strong><\/span> NCERT Textbook Page 41<\/strong><\/span> 2. How long does it take to cook dinner at home? More than an hour\/less than an hour.<\/strong><\/span> 3. Ask your father if he can cook as fast as your mother does. Yes\/No.<\/strong><\/span> 4. Which games take less than an hour to finish?<\/strong><\/span> 5. How long does a football match take?<\/strong><\/span> NCERT Textbook Page 43 .<\/strong><\/span> 3. How old was Muniya, when<\/strong><\/span> 4. What did she do first<\/strong><\/span> NCERT Textbook Page 44<\/strong><\/span> 2. Find about the growth of:<\/strong><\/span> 3. Draw pictures of the baby animals and the big animals.<\/strong><\/span> \u2022 How much older is Appu\u2019s grandfather than Rani\u2019s grandfather?<\/strong><\/span> NCERT Textbook Page 47<\/strong><\/span>
\nPractice Time<\/strong>
\n1. Three friends read time from a clock. Who is right?<\/strong><\/span>
\n
\nAns.<\/strong><\/span> In the first clock, short hand or hour hand is pointing to 3 and long hand or minute hand is pointing to 12. Hence, the time is 3:00.
\nIt means Pinki is right.
\nIn the second clock, Pinki is right. The clock is showing the time 5:35.
\nIn the third clock also Pinki is right. The clock is showing the time 7:15.<\/p>\n
\n1. Show the following times in the clock.<\/strong><\/span>
\nAns.<\/strong><\/span> The time showing figures of watches are being given here.
\n
\n2. Do you like sky watching? If yes, then this one should interest you.<\/strong><\/span>
\n (a) At what time does the sun rise at your place?<\/strong><\/span>
\nAns.<\/strong><\/span>
\n
\n(b) When does the sun set?<\/strong><\/span>
\nAns.<\/strong><\/span>
\n
\n(c) Does the sun rise and set at the same times every day?<\/strong><\/span>
\nAns.<\/strong><\/span> No.
\n(d) Look at the newspaper and see the time of sunrise and sunset in different months.<\/strong><\/span>
\nAns.<\/strong><\/span> The sunrise and sunset time is given in the table in New Delhi for the 1st date of different month in a year.
\n
\nNCERT Textbook Page 38<\/strong><\/span>
\nFind Out<\/strong>
\n1. How long will it take the minute hand to move from<\/strong><\/span>
\n
\nAns.<\/strong><\/span>
\n
\nNCERT Textbook Page 39<\/strong><\/span>
\n1. Draw where the hands will be<\/strong><\/span>
\n
\nAns.<\/strong><\/span>
\n
\n2. How long does your school assembly take?_______<\/strong><\/span>
\nAns.<\/strong><\/span> My school assembly takes 15 minutes.<\/p>\n
\nAns<\/strong><\/span>. The lunch break in my school is 30 minutes long.<\/p>\n
\nAns<\/strong><\/span>. The games period is 45 minutes long in my school.<\/p>\n
\nAns.<\/strong><\/span> Yes, all other periods take same length of time.<\/p>\n
\nAns.<\/strong><\/span> No, these are of enough length.<\/p>\n
\n1. How many minutes can these activities take? Make a guess and then check at home.<\/strong><\/span>
\n\u2022 Boiling of 1 litre of milk.<\/strong><\/span>
\nAns.<\/strong> <\/span>It takes about 5 minutes.
\n\u2022 Filling a bucket.<\/strong><\/span>
\nAns.<\/strong> <\/span>It takes about 2 minutes.
\n\u2022 Sweeping your room.<\/strong><\/span>
\nAns<\/strong><\/span>. It takes about 3 minutes.<\/p>\n
\n1. In one’minute, how many times can you________<\/strong><\/span>
\n (a) Snap your finger \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 _______________<\/strong><\/span>
\n (b) Skip a rope \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0_______________<\/strong><\/span>
\n (c) Jump up and down \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0_______________<\/strong><\/span>
\n (d)_______________ \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0_______________<\/strong><\/span><\/p>\n
\nAns.<\/strong><\/span>
\n(a) Snap your finger \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a015 times
\n(b) Skip a rope \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 30 times
\n(c) Jump up and down \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 40 times
\n(d) Blinking of eyelids \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 100 times<\/p>\n
\n (a) Speak non-stop \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0________________<\/strong><\/span>
\n (b) Stand on one leg \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 ________________<\/strong><\/span>
\n (c) Sing \u2018Aaaaa..without a break \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 ________________<\/strong><\/span>
\nAns.<\/strong><\/span>
\n(a) Speak non-stop \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a04 minutes
\n(b) Stand on one leg \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 1 minute
\n(c) Sing\u2018Aaaaa…\u2019without a break \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 1 minute<\/p>\n
\n (a) Run a 50 metre race \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0_______________<\/strong><\/span>
\n (b) Collect 50 pebbles from the ground \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0_______________<\/strong><\/span>
\n (c) Count 1 to 100 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 _______________<\/strong><\/span>
\nAns.<\/strong><\/span>
\n(a) Run a 50 metre race \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a03 minutes
\n(b) Collect 50 pebbles from the ground \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 2 minutes
\n(c) Count 1 to 100 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a01 minute<\/p>\n
\n1. Let\u2019s look at a clock again! Solve this one<\/strong><\/span>
\n (a) The minute hand started from \u20182\u2019. How many minutes will it take to come back to \u20182\u2019 again?<\/strong><\/span>
\nAns<\/strong><\/span>. It takes 60 minutes. As it makes one rotation in 60 minutes.
\n(b) What happens to the hour hand? Does it also move? How long will it take to move from one number to the next?<\/strong><\/span>
\nAns<\/strong><\/span>. Hour hand shows hour in watch. So it takes one hour to move from one number to the next one.
\n(c) Look around you and list the activities that take about one hour to complete.<\/strong><\/span>
\n 1.____________ 2.____________<\/strong><\/span>
\n 3.____________ 4.____________<\/strong><\/span>
\n 5.____________<\/strong><\/span>
\nAns.<\/strong><\/span> List of some common activities which take about one hour to complete.
\n1. Going to the temple and coming back.
\n2. Cleaning of house.
\n3. Completing one small chapter of math.
\n4. Preparing of breakfast by my mother.
\n5. Drawing a picture in my drawing book.<\/p>\n
\nAns.<\/strong><\/span> It takes a bit more than an hour.<\/p>\n
\nAns.<\/strong><\/span> No.<\/p>\n
\nAns.<\/strong><\/span> Some games such as race, high jump, long jump, relay race, swimming, etc. take less than an hour to finish.<\/p>\n
\nAns.<\/strong><\/span> The duration of a standard adult football match is 90 minutes plus 15 minutes break.<\/p>\n
\nRani\u2019s Diary<\/strong>
\n
\n1. Mark these in the correct order on Muniya\u2019s Time Line.<\/strong><\/span>
\nAns<\/strong><\/span>. The correct order on Muniya\u2019s Time Line
\n
\n2. Muniya got her first tooth in September. How many months old was she then? How many months have passed from March to September?<\/strong><\/span>
\nAns.<\/strong><\/span> She was about 6 months old when she got her first tooth. Seven months have passed from March to September.<\/p>\n
\n (a) She first sat up? (b) She got her first tooth?<\/strong><\/span>
\nAns.<\/strong><\/span> (a) Muniya was eight months old when she sat up first.
\n(b) Muniya was about six months old when she got her first tooth.<\/p>\n
\n (a) Walking\/eating a banana? (b) Crawling\/standing?<\/strong><\/span>
\nAns.<\/strong><\/span> (a) First she ate banana. (b) First she started crawling.<\/p>\n
\n1. Now make a time-line of a dog\u2019s life in your notebook.<\/strong><\/span>
\nAns.<\/strong> <\/span>Time line of a dog\u2019s life is given here:
\n
\n2. Note the differences between Muniya and Rani\u2019s puppy.<\/strong><\/span>
\nAns.<\/strong> <\/span>Differences between Muniya and Rani\u2019s puppy
\n
\nNCERT Textbook Page 45<\/strong><\/span>
\nFind Out<\/strong>
\n1. Do all animals grow at the same speed?<\/strong><\/span>
\nAns.<\/strong><\/span> No, all animals do not grow at the same speed.<\/p>\n
\n (a) A hen (b) A cow (c) A bird<\/strong><\/span>
\nAns.<\/strong><\/span> These animals grow in the following order:
\nA bird, A hen, A cow.<\/p>\n
\nAns.<\/strong><\/span>
\n
\n4. Here are the pictures of grandfathers posing for a photograph. Who looks the oldest to you?<\/strong><\/span>
\nAns.<\/strong> <\/span>Rani\u2019s grandfather<\/p>\n
\nAns.<\/strong><\/span> Age of elephant Appu\u2019s grandfather = 95 years
\nAge of Rani\u2019s grandfather = 70 years.
\nSo, Appu\u2019s grandfather is (95-70) 25 years older than Rani\u2019s grandfather.
\n\u2022 Will Chuchoo\u2019s grandfather ever grow as old as Appu\u2019s grandfather?<\/strong><\/span>
\nAns<\/strong><\/span>. Never.
\n\u2022 How much younger is Chuchoo rat\u2019s grandfather than Rani\u2019s grandfather?<\/strong><\/span>
\nAns.<\/strong> <\/span>Age of Rani\u2019s grandfather = 70 years
\nAge of Rat\u2019s grandfather = 2 years Difference = 70 – 2 = 68 years
\nHence, Chuchoo rat\u2019s grandfather is 68 years younger than Rani\u2019s grandfather.<\/p>\n
\nHolidays are Fun<\/strong>
\n1. Now write which dates these stand for<\/strong><\/span>
\n 5\/5\/06__________ \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a020\/5\/06__________<\/strong><\/span>
\n 7\/6\/06 __________ \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a01\/1\/07__________<\/strong><\/span>
\nAns.<\/strong><\/span>
\n5\/5\/06 5 \u00a0 \u00a0 \u00a0 \u00a0May 2006 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a020\/5\/06 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 20 May 2006
\n7\/6\/06 7 \u00a0 \u00a0 \u00a0 \u00a0June 2006 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a01\/1\/07 \u00a0 \u00a0 \u00a0 \u00a0 \u00a01 January 2007<\/p>\n