NCERT Solutions Class 3 Mathematics Chapter 7 Times go On

1. Think of some other things, some faster and some slower. Make a long list. Take seconds.
Ans. To throw a ball, to take a snap, to wear slippers, to switch on a light, to whistle, to skip a rope, to yawn, to squeeze a lemon, to slide on the swing.
Takes months
To grow wheat (some seed to big plant) – To make a movie
To change from summer to winter – For the earth to rotate
For a baby to come out its mother’s stomach – For glacier to melt
To construct a house – To write a book.

2. Have you heard people playing a table or the drums? Find out a few different beats they play. Also ask what bols they say for the beats they play
Ans. The bols are: Ta Tha Din Dha, Ta Tha Din Dha.

3. Irfan mother is twice as old as him. She is also 20 years older than him. Guess the ages of Irfan and his mother.
Ans. Irfan’s age is 20 years. His mother’s age is 40 years.

4. How many full moons have passed since you were born?
Ans. 87 full moons have passed since you were born. 5. Look at the birth certificate of Bincy

5. Look at the birth certificate of Bincy.

(a) 2/5/2002 shows that Bincy was born on 2___
Ans. 2nd of May.

(b) How old will Bincy be on 2 May 2008?
Ans. 6 years.

(c) How old will she be in the year 2052?
Ans. 50 years.

(d) On what date will she be eight years old? Write in numbers.
Ans. 2 May 2010

(e) How many months old was Bincy on 2 August 2002?
Ans. 3 months.

(f) After how many months of her birth was the certificate issued?
Ans. 3 months and 3 days.

(g) What is the registration number of her certificate?
Ans. 815/02.

6. Let us took at the calendar for the year 2006.

(a) How many months does a year have?
Ans. Twelve.

(b) List the months which have 30 days?
Ans. April, June, September, November.

(c) How many days does the month of February have?
Ans. January, March, May, July, August, October, December.

(d) How many days does the month of February have?
Ans. 28 days.

(e) How many days makes a week?
Ans. 7 days.

(f) How many weeks are there in July? Is it true for all the months?
Ans. Four, Yes.

(g) In which month did you come to class III?
Ans. April.

(h) Is there something special about these dates?
Ans. Yes.

7. Fill in the blanks with the correct answer:
2005 2008 2007 2004 2009 2010

(a) Which year was it two year back?
Ans. 2004.

(b) In which year were you in Class II?
Ans. 2005.

(c) Which year will be the next year?
Ans. 2007.

(d) Which year will come after 3 years?
Ans. 2010.

8. Look at the calendar (2006) to find out the days on which these fall?
Ans.

9. Which festival comes in the beginning of the year?
Ans. Pongal.

10. Which festival comes at the end of the year.
Ans. Christmas.

11. Now look at the calendar of 2006. Also look for the present month and draw any similar square in your notebook. Does the magic work for these?
Ans. The calendar of February 2006 is as under:

Number 14 is in the centre of square.
On joining three numbers in a line we have
6 + 14 + 22 = 42
7 + 14 +21 = 42
20 + 14 + 8 =42
13 +14 + 15 = 42
Yes, the magic also works here.

12. Can you find other magic patterns in the calendar?
Ans. Let us examine the addition of horizontal lines having seven numbers
4 + 5 + 6 + 8 + 10 = 49 = 1 x 49
11 + 12 + 13 + 14 + 15 + 16 + 17 = 98 = 2 x 49
18 + 19 + 20 + 21 + 22 + 23 + 24 = 147 = 3 49
25 + 26 + 27 + 28 + 29 + 30 + 31 = 196 + 4 49
Thus, each line is a multiple of 49.

13. Complete the calendar for August 2006?
Ans.

(a) On which day does this month end?
Ans. Thursday.

(b) Write the number of days in this month.
Ans. 31 days.

(c) What day is it on 13 August?
Ans. Sunday.

(d) What is the date on the second Saturday?
Ans. 12.

(e) Is the 21 a Sunday?
Ans. No.

(f) What is the day on the 29 th? What will be the date on the same day next week?
Ans. Tuesday, 5 th September.

(g) How many Thursday are there in this month?
Ans. Five.

 

Question. If it is 10.30 am now, where will the hands of a clock be ONE HOUR from now?

Answer : D

Question. The weekly timetable of Sunny's class is given below. Look at it and answer. What subject does Sunny's class have in the 4th period on Wednesday? 

(a) S.S.
(b) HINDI
(c) MUSIC
(d) ENGLISH

Answer : B

Question. 5 years ago, Jack was 10 years old. Jill will be 10 years old next year. Who is the older of the two and by how many years?
(a) Jack is older by 6 years
(b) Jill is older by 10 years
(c) Jill is older by 5 years
(d) Jack is older by 15 years

Answer : A 

Question. "The weekly timetable of Sunny's class is given below. Look at it and answer question:In a week, how many times does Sunny's class have English JUST BEFORE the lunch break?".

(a) 2
(b) 3
(c) 4
(d) 5

Answer : C

Question. A page from a  diary of 2006 is shown  here.
What day would February 1, 2006 be?

(a) Monday
(b) Tuesday
(c) Wednesday
(d) Thursday 

Answer : C

Question. If the day after tomorrow is a Sunday, then yesterday was a ________.
(a) Friday
(b) Thursday
(c) Sunday
(d) Wednesday

Answer : B

Question. Which of the following actions can you do in about 1 second?
(a) Sing a song
(b) Clap your hands once
(c) Write the multiplication table of 8
(d) Run around your school playground twice

Answer : B

Question. What time is this clock showing?

(a) 6 o'clock  
(b) 06:30
(c) 12 o'clock  
(d) 12:30

Answer : A 

Question. Laya has made a calendar as shown below: Is the calendar correct?

(a) No, Sunday should come after Monday.
(b) No, the number of days should be 30.
(c) No, 1st June must be ALWAYS  a Sunday.
(d) Yes, the calendar is correct.

Answer : B

Question. Manju completes running ONCE around this park in 20 minutes, running at the same speed from start to end. 
At which point will she be 10 minutes  after she starts?

(a) A
(b) B
(c) C
(d) D

Answer : C

Question. "If the MINUTE hand of a clock is at 6, the time shown by the clock could be".
(a) 09:20
(b) 12:00
(c) 02:30
(d) 06:00

Answer : C

Question. "If January 20 is a Tuesday, what day was January 18 of the same year?"
Sunday, Monday, Wednesday, Friday.
(a) Sunday
(b) Monday
(c) Wednesday
(d) Friday

Answer : A 

Question. The lunch break in Tapan's school starts at 12 noon and ends one hour later. 
What would the clock in his class show at the start and end of the lunch break? 

Answer : C

Question. Karim gets up at 5:30 every morning. Where would the hands of his alarm clock be at that time?

Answer : D

Question. Look at the calendar below. Mala has music class every Monday and Friday. How many music classes should she have in January 2005?

(a) 9
(b) 8
(c) 5
(d) 2

Answer : A

Question. A page from a calendar is shown here:
The name of the month is missing. Which month could it be?

(a) January
(b) February
(c) October
(d) November

Answer : D

Question. If 29th June is a Saturday, what day will 1st July be?
(a) Sunday
(b) Monday
(c) Tuesday
(d) Wednesday

Answer : B