NCERT Textbook: Tenths and Hundredths | Mathematics for Class 5: NCERT PDF Download

 Page 1


1 2 3 4
Tenths and Hundredths
Oh, so this pencil  is 3
centimetres and
6 millimetres long.
10
135
Wealsocallone-tenthofacentimetreas0.1centimetre.Weread
itas zeropointonecentimetre.
Soone isthesameas0.1cm.
‘ ’
millimetre
1 2 3 4 5 6 7 8 9 10
3 4
It is  more than
3 centimetres.
Here one centimetre has 10
equal parts. So each part is
one-tenth of a centimetre.
One-tenth of a centimetre is
called one millimetre (mm).
See I am
3 mm long!
1 2 3 4
1 2
But I am longer!
Seven-tenth of a
centimetre or
____ millimetres
Frogs
Gold  Frogs
Bull Frog
134
1 2
1 2 3 4 5
2 3
1 2 3
1 2
Whatwasthelengthofthesmallestpencilyouhaveused?
Howlongisthispencil?Guess_______cm
Measureitusingascale.Howgoodisyourguess?
WecanseethatAnjuusedalenstomakeitlookbigger.
Reprint 2024-25
Page 2


1 2 3 4
Tenths and Hundredths
Oh, so this pencil  is 3
centimetres and
6 millimetres long.
10
135
Wealsocallone-tenthofacentimetreas0.1centimetre.Weread
itas zeropointonecentimetre.
Soone isthesameas0.1cm.
‘ ’
millimetre
1 2 3 4 5 6 7 8 9 10
3 4
It is  more than
3 centimetres.
Here one centimetre has 10
equal parts. So each part is
one-tenth of a centimetre.
One-tenth of a centimetre is
called one millimetre (mm).
See I am
3 mm long!
1 2 3 4
1 2
But I am longer!
Seven-tenth of a
centimetre or
____ millimetres
Frogs
Gold  Frogs
Bull Frog
134
1 2
1 2 3 4 5
2 3
1 2 3
1 2
Whatwasthelengthofthesmallestpencilyouhaveused?
Howlongisthispencil?Guess_______cm
Measureitusingascale.Howgoodisyourguess?
WecanseethatAnjuusedalenstomakeitlookbigger.
Reprint 2024-25
1 2 3 4
135
What does 0.9 cm mean?  It is the same as ____ millimetres. We 
can also say this is nine-tenths of a cm. Right?
So 30.5 cm is the same as ____ cm and ____ millimetre.
About how many of the big frogs will fit on the 1m scale? _______
If they sit in a straight line about how many of the small frogs will 
cover 1m? _______
Practice time
1) Length of the nail is 2 cm and ___ mm 
or 2. ___ cm.
h What is the length of this pencil? _______ mm. 
What is its length in centimetres?
Frogs
Have you seen frogs? Where? How many different types of frogs have 
you seen? Are all the frogs of the same length? Here are two 
interesting examples.
Gold  Frogs
This kind of frog is among 
the smallest in the world. Its 
length is only 0.9 cm ! 
Guess how many such frogs 
can sit on your little finger!
Bull Frog
But this is among the biggest frogs. 
It is as long as 30.5 cm!
1 2
1 2 3 4 5
2 3
Reprint 2024-25
Page 3


1 2 3 4
Tenths and Hundredths
Oh, so this pencil  is 3
centimetres and
6 millimetres long.
10
135
Wealsocallone-tenthofacentimetreas0.1centimetre.Weread
itas zeropointonecentimetre.
Soone isthesameas0.1cm.
‘ ’
millimetre
1 2 3 4 5 6 7 8 9 10
3 4
It is  more than
3 centimetres.
Here one centimetre has 10
equal parts. So each part is
one-tenth of a centimetre.
One-tenth of a centimetre is
called one millimetre (mm).
See I am
3 mm long!
1 2 3 4
1 2
But I am longer!
Seven-tenth of a
centimetre or
____ millimetres
Frogs
Gold  Frogs
Bull Frog
134
1 2
1 2 3 4 5
2 3
1 2 3
1 2
Whatwasthelengthofthesmallestpencilyouhaveused?
Howlongisthispencil?Guess_______cm
Measureitusingascale.Howgoodisyourguess?
WecanseethatAnjuusedalenstomakeitlookbigger.
Reprint 2024-25
1 2 3 4
135
What does 0.9 cm mean?  It is the same as ____ millimetres. We 
can also say this is nine-tenths of a cm. Right?
So 30.5 cm is the same as ____ cm and ____ millimetre.
About how many of the big frogs will fit on the 1m scale? _______
If they sit in a straight line about how many of the small frogs will 
cover 1m? _______
Practice time
1) Length of the nail is 2 cm and ___ mm 
or 2. ___ cm.
h What is the length of this pencil? _______ mm. 
What is its length in centimetres?
Frogs
Have you seen frogs? Where? How many different types of frogs have 
you seen? Are all the frogs of the same length? Here are two 
interesting examples.
Gold  Frogs
This kind of frog is among 
the smallest in the world. Its 
length is only 0.9 cm ! 
Guess how many such frogs 
can sit on your little finger!
Bull Frog
But this is among the biggest frogs. 
It is as long as 30.5 cm!
1 2
1 2 3 4 5
2 3
Reprint 2024-25
Candle 1
Candle 2
Candle 3 The length of this lady's finger is _____ cm and _____ mm.
We can also write it as ______ cm.
(bhindi)
3) Using the scale on this page find the difference in length
between candle 1 and candle 3.
Candle 1
Flame 3
Flame 1
Candle 2
Flame 2
Candle 3
Length in cm Length in cm
and mm
Length of
2)
1 2 3 4 5 6 7 8 9 10
Guess, Draw and Measure
Our Eyes Get Confused?
Guess and Colour
Rods of length between 3 cm and 4 cm Orange
First colour the rods as shown, without measuring! Then check.
Rods of length less than 1 cm Red
Rods of length between1 cm and 2 cm Blue
Rods of length between 2 cm and 3 cm Green
137 136
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Page 4


1 2 3 4
Tenths and Hundredths
Oh, so this pencil  is 3
centimetres and
6 millimetres long.
10
135
Wealsocallone-tenthofacentimetreas0.1centimetre.Weread
itas zeropointonecentimetre.
Soone isthesameas0.1cm.
‘ ’
millimetre
1 2 3 4 5 6 7 8 9 10
3 4
It is  more than
3 centimetres.
Here one centimetre has 10
equal parts. So each part is
one-tenth of a centimetre.
One-tenth of a centimetre is
called one millimetre (mm).
See I am
3 mm long!
1 2 3 4
1 2
But I am longer!
Seven-tenth of a
centimetre or
____ millimetres
Frogs
Gold  Frogs
Bull Frog
134
1 2
1 2 3 4 5
2 3
1 2 3
1 2
Whatwasthelengthofthesmallestpencilyouhaveused?
Howlongisthispencil?Guess_______cm
Measureitusingascale.Howgoodisyourguess?
WecanseethatAnjuusedalenstomakeitlookbigger.
Reprint 2024-25
1 2 3 4
135
What does 0.9 cm mean?  It is the same as ____ millimetres. We 
can also say this is nine-tenths of a cm. Right?
So 30.5 cm is the same as ____ cm and ____ millimetre.
About how many of the big frogs will fit on the 1m scale? _______
If they sit in a straight line about how many of the small frogs will 
cover 1m? _______
Practice time
1) Length of the nail is 2 cm and ___ mm 
or 2. ___ cm.
h What is the length of this pencil? _______ mm. 
What is its length in centimetres?
Frogs
Have you seen frogs? Where? How many different types of frogs have 
you seen? Are all the frogs of the same length? Here are two 
interesting examples.
Gold  Frogs
This kind of frog is among 
the smallest in the world. Its 
length is only 0.9 cm ! 
Guess how many such frogs 
can sit on your little finger!
Bull Frog
But this is among the biggest frogs. 
It is as long as 30.5 cm!
1 2
1 2 3 4 5
2 3
Reprint 2024-25
Candle 1
Candle 2
Candle 3 The length of this lady's finger is _____ cm and _____ mm.
We can also write it as ______ cm.
(bhindi)
3) Using the scale on this page find the difference in length
between candle 1 and candle 3.
Candle 1
Flame 3
Flame 1
Candle 2
Flame 2
Candle 3
Length in cm Length in cm
and mm
Length of
2)
1 2 3 4 5 6 7 8 9 10
Guess, Draw and Measure
Our Eyes Get Confused?
Guess and Colour
Rods of length between 3 cm and 4 cm Orange
First colour the rods as shown, without measuring! Then check.
Rods of length less than 1 cm Red
Rods of length between1 cm and 2 cm Blue
Rods of length between 2 cm and 3 cm Green
137 136
Reprint 2024-25
Candle 1
Candle 2
Candle 3
1 2 3 4 5 6 7 8 9 10
Guess, Draw and Measure
Guess the lengths to draw these things. Ask your friend to draw
the same. After you make the drawing use a scale to measure the
length. Whose drawing showed a better guess?
Measure of your
friend's drawing
Measure of
your drawing
An ant of length
less than 1 cm
Guess its length
and draw
Pencil of length
about 7 cm
A glass 11 cm high with
water up to 5 cm
A bangle of perimeter
20 cm
A curly hair of length
cm 16
Our Eyes Get Confused?
Which line is longer? A or B ? Measure each line and write how
long it is in centimetres. How good is your guess?
Guess and Colour
A
B
Which line is longer? C or D ? Measure each line.
How good is your guess?
C
D
137 136
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Page 5


1 2 3 4
Tenths and Hundredths
Oh, so this pencil  is 3
centimetres and
6 millimetres long.
10
135
Wealsocallone-tenthofacentimetreas0.1centimetre.Weread
itas zeropointonecentimetre.
Soone isthesameas0.1cm.
‘ ’
millimetre
1 2 3 4 5 6 7 8 9 10
3 4
It is  more than
3 centimetres.
Here one centimetre has 10
equal parts. So each part is
one-tenth of a centimetre.
One-tenth of a centimetre is
called one millimetre (mm).
See I am
3 mm long!
1 2 3 4
1 2
But I am longer!
Seven-tenth of a
centimetre or
____ millimetres
Frogs
Gold  Frogs
Bull Frog
134
1 2
1 2 3 4 5
2 3
1 2 3
1 2
Whatwasthelengthofthesmallestpencilyouhaveused?
Howlongisthispencil?Guess_______cm
Measureitusingascale.Howgoodisyourguess?
WecanseethatAnjuusedalenstomakeitlookbigger.
Reprint 2024-25
1 2 3 4
135
What does 0.9 cm mean?  It is the same as ____ millimetres. We 
can also say this is nine-tenths of a cm. Right?
So 30.5 cm is the same as ____ cm and ____ millimetre.
About how many of the big frogs will fit on the 1m scale? _______
If they sit in a straight line about how many of the small frogs will 
cover 1m? _______
Practice time
1) Length of the nail is 2 cm and ___ mm 
or 2. ___ cm.
h What is the length of this pencil? _______ mm. 
What is its length in centimetres?
Frogs
Have you seen frogs? Where? How many different types of frogs have 
you seen? Are all the frogs of the same length? Here are two 
interesting examples.
Gold  Frogs
This kind of frog is among 
the smallest in the world. Its 
length is only 0.9 cm ! 
Guess how many such frogs 
can sit on your little finger!
Bull Frog
But this is among the biggest frogs. 
It is as long as 30.5 cm!
1 2
1 2 3 4 5
2 3
Reprint 2024-25
Candle 1
Candle 2
Candle 3 The length of this lady's finger is _____ cm and _____ mm.
We can also write it as ______ cm.
(bhindi)
3) Using the scale on this page find the difference in length
between candle 1 and candle 3.
Candle 1
Flame 3
Flame 1
Candle 2
Flame 2
Candle 3
Length in cm Length in cm
and mm
Length of
2)
1 2 3 4 5 6 7 8 9 10
Guess, Draw and Measure
Our Eyes Get Confused?
Guess and Colour
Rods of length between 3 cm and 4 cm Orange
First colour the rods as shown, without measuring! Then check.
Rods of length less than 1 cm Red
Rods of length between1 cm and 2 cm Blue
Rods of length between 2 cm and 3 cm Green
137 136
Reprint 2024-25
Candle 1
Candle 2
Candle 3
1 2 3 4 5 6 7 8 9 10
Guess, Draw and Measure
Guess the lengths to draw these things. Ask your friend to draw
the same. After you make the drawing use a scale to measure the
length. Whose drawing showed a better guess?
Measure of your
friend's drawing
Measure of
your drawing
An ant of length
less than 1 cm
Guess its length
and draw
Pencil of length
about 7 cm
A glass 11 cm high with
water up to 5 cm
A bangle of perimeter
20 cm
A curly hair of length
cm 16
Our Eyes Get Confused?
Which line is longer? A or B ? Measure each line and write how
long it is in centimetres. How good is your guess?
Guess and Colour
A
B
Which line is longer? C or D ? Measure each line.
How good is your guess?
C
D
137 136
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100 Rupee note
10 Rupee note
20 Rupee note
5 Rupee note
Post card
Math-Magic book
Your guess in cm Your measure in cm
length
width
length
width
Size of
The Longest Rupee Notes?
What is the length of a 100 rupee note?  Guess. 
Now measure it using a scale.
Now guess the length and width of many other things. Measure 
and find the difference between your measure and your guess.
` 2.50 for
one egg
` 120.50
` 6.50
` 32.99
` 8.75
` 0.50
At the market
` 567.25
Whose Tail is the Longest?
Guess whose tail is the longest. Now measure 
the tails. How good is your guess?
138
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