NCERT Textbook - Long And Short | Mathematics for Class 3: NCERT PDF Download

 Page 1


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46
So, the farmer measures his arm with
the rope and Lali gives him 7 times
that much rope.
Measure your arm and your mother's
arm. What is the difference?
Long and Short
Can you give me 7
arms of rope?
Why don't you measure
your arm with this rope
and take 7 times of that
length?
But this is only
6 arms long.
Here is your 7
arms of rope.
Children should be encouraged to look around and see how lengths of different things are measured
in different ways using local or non-standard units. For example, rope, garlands or cloth may be
sold by the cubit, handspan, fingers, etc. They also need to do activities of measuring lengths
(and distances) with their own body parts.
4
Lali is selling things at her father's shop.
A farmer comes to buy rope.
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Page 2


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46
So, the farmer measures his arm with
the rope and Lali gives him 7 times
that much rope.
Measure your arm and your mother's
arm. What is the difference?
Long and Short
Can you give me 7
arms of rope?
Why don't you measure
your arm with this rope
and take 7 times of that
length?
But this is only
6 arms long.
Here is your 7
arms of rope.
Children should be encouraged to look around and see how lengths of different things are measured
in different ways using local or non-standard units. For example, rope, garlands or cloth may be
sold by the cubit, handspan, fingers, etc. They also need to do activities of measuring lengths
(and distances) with their own body parts.
4
Lali is selling things at her father's shop.
A farmer comes to buy rope.
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47
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k In how many steps will
Dorji cross the road?
k How many cups can be
placed in a line on this
table?
k How many pots can be
placed to reach the tree
branch?
k How many shirts can be
hung on this wire?
How Many?
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Page 3


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46
So, the farmer measures his arm with
the rope and Lali gives him 7 times
that much rope.
Measure your arm and your mother's
arm. What is the difference?
Long and Short
Can you give me 7
arms of rope?
Why don't you measure
your arm with this rope
and take 7 times of that
length?
But this is only
6 arms long.
Here is your 7
arms of rope.
Children should be encouraged to look around and see how lengths of different things are measured
in different ways using local or non-standard units. For example, rope, garlands or cloth may be
sold by the cubit, handspan, fingers, etc. They also need to do activities of measuring lengths
(and distances) with their own body parts.
4
Lali is selling things at her father's shop.
A farmer comes to buy rope.
2019-2020
47
0 1 2 3 4 5 6 7 8 9 10 11 13 14 15 16 17 18 19 20 21 12 22 23 24
k In how many steps will
Dorji cross the road?
k How many cups can be
placed in a line on this
table?
k How many pots can be
placed to reach the tree
branch?
k How many shirts can be
hung on this wire?
How Many?
2019-2020
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48
How Much is a Centimetre (cm)?
The matchstick is 4 centimetres long.
The die is 1 centimetre from every side.
The lizard is 13 centimetres long.
The leaf is  centimetres long.
The wax colour is  centimetres long.
Now, look at a scale that you find in a geometry box. How many
centimetres does it have? 
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Page 4


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46
So, the farmer measures his arm with
the rope and Lali gives him 7 times
that much rope.
Measure your arm and your mother's
arm. What is the difference?
Long and Short
Can you give me 7
arms of rope?
Why don't you measure
your arm with this rope
and take 7 times of that
length?
But this is only
6 arms long.
Here is your 7
arms of rope.
Children should be encouraged to look around and see how lengths of different things are measured
in different ways using local or non-standard units. For example, rope, garlands or cloth may be
sold by the cubit, handspan, fingers, etc. They also need to do activities of measuring lengths
(and distances) with their own body parts.
4
Lali is selling things at her father's shop.
A farmer comes to buy rope.
2019-2020
47
0 1 2 3 4 5 6 7 8 9 10 11 13 14 15 16 17 18 19 20 21 12 22 23 24
k In how many steps will
Dorji cross the road?
k How many cups can be
placed in a line on this
table?
k How many pots can be
placed to reach the tree
branch?
k How many shirts can be
hung on this wire?
How Many?
2019-2020
0 1 2 3 4 5 6 7 8 9 10 11 13 14 15 16 17 18 19 20 21 12 22 23 24
48
How Much is a Centimetre (cm)?
The matchstick is 4 centimetres long.
The die is 1 centimetre from every side.
The lizard is 13 centimetres long.
The leaf is  centimetres long.
The wax colour is  centimetres long.
Now, look at a scale that you find in a geometry box. How many
centimetres does it have? 
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49
0 1 2 3 4 5 6 7 8 9 10 11 13 14 15 16 17 18 19 20 21 12 22 23 24
The small scale that you mostly use in school is like this one.
Is it easier to start measuring from the 0 mark? Look at the
things drawn near the scale and find out their lengths.
k What are the little lines on the scale used for?
k Look for things that are
k About 10 centimetres long
k Between 10 and 20 centimetres long
k Less than 1 cm long.
k Draw some of them here.
Mouse! Where
are you?
I
am
here.
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Page 5


0 1 2 3 4 5 6 7 8 9 10 11 13 14 15 16 17 18 19 20 21 12 22 23 24
46
So, the farmer measures his arm with
the rope and Lali gives him 7 times
that much rope.
Measure your arm and your mother's
arm. What is the difference?
Long and Short
Can you give me 7
arms of rope?
Why don't you measure
your arm with this rope
and take 7 times of that
length?
But this is only
6 arms long.
Here is your 7
arms of rope.
Children should be encouraged to look around and see how lengths of different things are measured
in different ways using local or non-standard units. For example, rope, garlands or cloth may be
sold by the cubit, handspan, fingers, etc. They also need to do activities of measuring lengths
(and distances) with their own body parts.
4
Lali is selling things at her father's shop.
A farmer comes to buy rope.
2019-2020
47
0 1 2 3 4 5 6 7 8 9 10 11 13 14 15 16 17 18 19 20 21 12 22 23 24
k In how many steps will
Dorji cross the road?
k How many cups can be
placed in a line on this
table?
k How many pots can be
placed to reach the tree
branch?
k How many shirts can be
hung on this wire?
How Many?
2019-2020
0 1 2 3 4 5 6 7 8 9 10 11 13 14 15 16 17 18 19 20 21 12 22 23 24
48
How Much is a Centimetre (cm)?
The matchstick is 4 centimetres long.
The die is 1 centimetre from every side.
The lizard is 13 centimetres long.
The leaf is  centimetres long.
The wax colour is  centimetres long.
Now, look at a scale that you find in a geometry box. How many
centimetres does it have? 
2019-2020
49
0 1 2 3 4 5 6 7 8 9 10 11 13 14 15 16 17 18 19 20 21 12 22 23 24
The small scale that you mostly use in school is like this one.
Is it easier to start measuring from the 0 mark? Look at the
things drawn near the scale and find out their lengths.
k What are the little lines on the scale used for?
k Look for things that are
k About 10 centimetres long
k Between 10 and 20 centimetres long
k Less than 1 cm long.
k Draw some of them here.
Mouse! Where
are you?
I
am
here.
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50
How Big is My Hand?
Measure the length of your
thumb and your little
finger. Use the scale on
this page.
Which is longer? Thumb or
little finger?
Bring a measuring-tape to
your class.
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.?
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2019-2020