NCERT solutions for Math - Magic [English] Class 3 chapter 4 - Long and Short [Latest edition]

Measure your arm and your mother's arm. What is the difference?

In how many steps will Dorji cross the road?

How many cups can be placed in a line on this table? 

How many pots can be placed to reach the tree branch?

How many shirts can be hung on this wire?

The matchstick is 4 centimetres long.

The die is 1 centimetre from every side.

The lizard is 13 centimetres long.

1. The leaf is ______ centimetres long.
2. The wax colour is ______ centimetres long.
3. Now, look at a scale that you find in a geometry box. How many centimetres does it have? ______

What are the little lines on the scale used for?

Look for things that are about 10 cm long. 

Look for things that are between 10 and 20 centimetres long.

Look for things that are less than 1 cm long.

Which is longer? Thumb or little finger?

Guess the length of different parts of your body and check if your guess is correct. You can use a scale, string, measuring tape etc.

Think - How will you know the number of centimetres if you measure with a rope, shoe-string, thread etc.? 

Compare your measurement with your friends.

1. Who has the biggest head and who has the smallest head?
2. Who has the longest hand (from middle finger to wrist)?
3. Which is longer? Your ear or your nose?
4. Is any of your nails more than 1 centimetre long?

Ant Gibli has to reach the grains. She is looking for the shortest road. Can you tell her which is shortest?

Can you draw a road shorter than these? What is the length of that road?

You must have seen shopkeepers measuring cloth with a metre rod.

• Take a metre rod and a rope.
• Make a knot at one end of the rope.
• Keep the metre rod with the rope.
• Mark 1 metre on the rope and make a knot there.
• Now the length between the two knots is 1 metre. This is your metre-rope.
  If you don't get a metre rod use a measuring-tape and mark 100 centimetres on the rope. 100 centimetres are equal to a metre, so you get the metre-rope. 

Activity 1

• Find some things that look 1 metre long.
• Use your metre-rope to find which of these things are more or less than 1 metre.

Activity 2

Some Class III children have marked a 1 metre height on the wall of their class.

You can also mark 1 metre on your class wall.

Now make a chart of the heights of your friends. To measure the centimetres, you can use your small scale.

Which of these will be in centimetres and which will be in metres?

Width of computer screen

Which of these will be in centimetres and which will be in metres?

Length of a Pagdi worn by Sikhs

Which of these will be in centimetres and which will be in metres?

Height of a 1-year old child

Which of these will be in centimetres and which will be in metres?

Length of a banana

Which of these will be in centimetres and which will be in metres?

Waist of an elephant

Which of these will be in centimeters and which will be in meters?

Height of a sugarcane

Which of these will be in centimeters and which will be in meters?

Depth of a well

Which of these will be in centimetres and which will be in metres?

Height of your mother

Which of these will be in centimeters and which will be in meters?

Distance from classroom to school gate 

Which of these will be in centimeters and which will be in meters?

Length of your father’s arm

Which is farther from Agra Cantt. Railway Station-Taj Mahal or Fatehpur Sikri?

Which of these is nearer to the railway line:

Babarpur forest or Taj forest?

Which of these is nearer to the railway line?

Agra Fort or Taj forest?

Which is closer to the river Yamuna:

Taj Mahal or the Railway Station?

Draw lines to match each picture with how long it can be.

The animals in the picture had a competition. The animal who had the longest tail won a prize. Now who do you think won the first prize and who won the second? Just guess the length of the longest tail.