PPT: Long and Short (Measurement) | Mathematics for Class 4: NCERT PDF Download

 Page 1


How to
M E A S U R E
Page 2


How to
M E A S U R E
Measuring helps us know the size of objects,
like how tall a tree is or how wide a table is.
Learning to measure is important because it
helps us describe and compare things
accurately. How many jobs can you think of
which involve measuring?
Page 3


How to
M E A S U R E
Measuring helps us know the size of objects,
like how tall a tree is or how wide a table is.
Learning to measure is important because it
helps us describe and compare things
accurately. How many jobs can you think of
which involve measuring?
Units of Measure
We use millimeters
(mm) for measuring
the smallest of lengths
like the thickness of
paper or a grain of
rice!
Centimeters are used
for measuring medium
sized objects around
your home or school,
like a notepad or
reading book. There
are 10 mm in 1 cm.
Meters are used for
measuring larger
distances, like an
athletics track or the
length of a pool. There
are 100 cm in 1 m!
Millimeters (mm) Centimeters (cm)
Meters (m)
Page 4


How to
M E A S U R E
Measuring helps us know the size of objects,
like how tall a tree is or how wide a table is.
Learning to measure is important because it
helps us describe and compare things
accurately. How many jobs can you think of
which involve measuring?
Units of Measure
We use millimeters
(mm) for measuring
the smallest of lengths
like the thickness of
paper or a grain of
rice!
Centimeters are used
for measuring medium
sized objects around
your home or school,
like a notepad or
reading book. There
are 10 mm in 1 cm.
Meters are used for
measuring larger
distances, like an
athletics track or the
length of a pool. There
are 100 cm in 1 m!
Millimeters (mm) Centimeters (cm)
Meters (m)
Length is how long
something is, like the
length of a snake from
it’s mouth to the tip of
it’s tail. Width is how
broad something is,
like how wide a river is.
Length vs Width
width
length
Page 5


How to
M E A S U R E
Measuring helps us know the size of objects,
like how tall a tree is or how wide a table is.
Learning to measure is important because it
helps us describe and compare things
accurately. How many jobs can you think of
which involve measuring?
Units of Measure
We use millimeters
(mm) for measuring
the smallest of lengths
like the thickness of
paper or a grain of
rice!
Centimeters are used
for measuring medium
sized objects around
your home or school,
like a notepad or
reading book. There
are 10 mm in 1 cm.
Meters are used for
measuring larger
distances, like an
athletics track or the
length of a pool. There
are 100 cm in 1 m!
Millimeters (mm) Centimeters (cm)
Meters (m)
Length is how long
something is, like the
length of a snake from
it’s mouth to the tip of
it’s tail. Width is how
broad something is,
like how wide a river is.
Length vs Width
width
length
To record the length of this
paperclip, line up the start of
the paperclip with the 0 cm
line. Then record where the
item ends. The length of this
paperclip is exactly 3 cm. 
How to Measure