NCERT solutions for Math - Magic [English] Class 4 chapter 4 - Tick-Tick-Tick [Latest edition]

Three friends read time from a clock. Who is right?

	Cheeku	Bittu	Pinki
	12:03	12:15	3:00
	7:25	5:07	5:35
	3:35	7:03	7:15

Show the following time on the clock:

3:10

Show the following time on the clock:

6:40

Show the following time on the clock:

4:45

Show the following time on the clock:

2:20

Show the following time on the clock:

3:15

Show the following time on the clock:

7:35

Do you like sky watching? If yes, then this one should interest you:

At what time does the sunrise at your place?

Do you like sky watching? If yes, then this one should interest you:

When does the sunset?

Does the sunrise and set at the same times every day?

Look at a newspaper and see the time of sunrise and sunset in different months.

How long will it take the minute hand to move from-

to

______

How long will it take the minute hand to move from-

to

______

How long will it take the minute hand to move from-

to

______

How long will it take the minute hand to move from-

to

______

Draw where the hands will be:

20 minutes after 6 o'clock

Draw where the hands will be:

30 minutes after 8 o'clock

Draw where the hands will be:

10 minutes after 7 o'clock

Draw where the hands will be:

15 minutes after 5 o'clock

1. How long does your school assembly take?
2. How long is your lunch break?
3. How long is your games period?
4. Is it the same as all the other periods?

How many minutes can this activity take? Make a guess and then check at home.

Boiling 1 liter milk

How many minutes can this activity take? Make a guess and then check at home.

Filling a bucket

How many minutes can this activity take? Make a guess and then check at home.

Sweeping your room

In one minute, how many times can you -

1. Snap your finger - ______
2. Skip a rope - ______
3. Jump up and down - ______
4. ______ - ______

Write more such fun activities in this column.

Here is another challenge for you. How long can you -

1. Speak non-stop ______
2. Stand on one leg ______
3. Sing 'Aaaaa....' without a break ______

How long do you take to -

1. Run a 50 metre race- _______
2. Collect 50 pebbles from the ground- ______
3. Count 1 to 100- ______

Let's look at a clock again! Solve this one -

The minute hand started from '2'. How many minutes will it take to come back to '2' again?

Let's look at a clock again! Solve this one-

What happens to the hour hand? Does it also move? How long will it take to move from one number to the next?

Let's look at a clock again! Solve this one-

Look around you and list the activities that take about one hour to complete.

1. ______
2. ______
3. ______
4. ______
5. ______

How long does it take to cook dinner at home?

Ask your father if he can cook as fast as your mother does.

Which games take less than an hour to finish?

How long does a football match take?

Mark these in the correct order on Muniya's Time Line.

Muniya got her first tooth in September. How many months old was she then? How many months have passed from March to September?

How old was Muniya, when

1. she first sat up?
2. she got her first tooth?

What did she do first -

What did she do first-

Rani had a pet puppy. After 2 weeks it opened its eyes. She watched it grow like this:

After 3 weeks it got its first teeth and started eating.	After 4 weeks - it started walking around but was still wobbling.
It had a full set of teeth by the time it was 7 months old.	After 1 year, it was a grown-up dog and got its own puppies.

Now make a time-line of this dog's life in your notebook.

Note the differences between Muniya and Rani's puppy:

Do all animals grow at the same speed?

Discuss about the growth of -

1. A hen
2. A cow
3. A bird

Draw pictures of the baby animal and the big animal.

Here are the pictures of grandfathers posing for a photograph. Who looks the oldest to you?

Elephant Appu's grandfather (95 years old)	Chuchoo rat's grandfather (2 years old)	Rani's grandfather (70 years old)

1. How much older is Appu’s grandfather than Rani’s grandfather?
2. Will Chuchoo’s grandfather ever grow as old as Appu’s grandfather?
3. How much younger is Chuchoo rat’s grandfather than Rani’s grandfather?

Write which dates these stand for –

Write these dates in numbers.

How long did it take the letter to reach from Ajmer to Nagpur?

How many days will Atif spend at his Nani's place?

Fill in the table:

Who has got longer holidays - Shabana or Atif?

Which long holidays do you get in school? Fill the table.

On 15 May 2006 Chandran went to a shop to buy butter. He checked the packet to see if this butter was safe to eat.

It was written on the packet - 'Best before 180 days from the date of packing.'

Then he checked the date of packing. It was 15/01/06.

Help him find out if he should buy this butter or not.

1. In which month was the butter packed?
2. Which month will it be 180 days after 15/01/06?
3. Can Chandran eat it on 15th May 2006?

Do you ever check the date of packing of things you buy?

Have you seen medicines which have the written on them? It tells you after which date it is unsafe to take the medicine.

Which are the other things that come with an expiry date?

On a cough syrup it was written:

Mfg. date - 07/03

This shows it was made in July 2003.

Exp. date - 07/05

This shows the month and year till when it is safe to take.

Can you guess why they missed the train?

Look at this chart. It tells the difference between your watch and a 24-hour clock. Try to complete it.

Now can you tell why a 24-hour clock is called so?

Suppose a train leaves at 8:30 at night. The time written on the Railway ticket would be ______.

You must have noted the time of sunrise and sunset.
Write here using am and pm.

Where have you seen a 24-hour clock being used?