Units for Measuring Length
Units for measuring length are discussed here.
We
have different units of measurements to measure lengths. The bigger unit of
measuring length is kilometer. Smaller measurement units are decimeter, centimeter
and millimeter.
We know that the standard unit of length is ‘Meter’ which is written in short as ‘m’.
A meter length is divided into 100 equal parts.
Each part is named centimeter and written in short as ‘cm’.
Thus, 1 m = 100 cm and 100 cm = 1 m
The long distances are measured in kilometer. This kilometer equals to 1000 meters. The kilometer is written in short as km.
1 kilometer (km) = 1000 meters (m) and 1000 m = 1 km
The different units of length and their equivalents are given here:
1 kilometer (km)
1 Hectometer (hm)
1 Demetre (dcm)
1 Meter (m)
1 Decimeter (dm)
1 Centimeter (cm)

= 10 Hectometers (hm) = 1000 m
= 10 Decathletes (dcm) = 100 m
= 10 Metres (m)
= 10 Decimeters
(dm) = 100 cm = 1000 mm
= 10 Centimetres (cm)
= 10 Millimetres (mm)

Mostly we use Kilometer (km), Meter (m) and Centimeter (cm) as the units of length.
If you look at the ruler you can find that one centimeter is
divided into 10 equal parts which are marked by smaller lines. Each line
represents 1 millimeter. So, 10 millimeters is equal to 1 cm. 10 mm = 1 cm.
Millimeter is written in short form as mm. Smaller lengths
such as thickness of a tile or card board are measured in millimeters.
If we divide 1 meter into 10 equal parts then each part is
called a decimeter. It is written in short form as dm.
10 dm = 1 m
The higher unit to measure the length is kilometer. We know
already that 1 kilometer = 1000 meters.
Note: The set of standard units which we use is known as metric system.
To convert kilometer into meters we multiply by 1000 and meters into kilometer we divide by 1000.
The units for measuring length are cm, m and km. Sometimes when we measure the length of any object, it is not exactly up to the cmmark.
We can observe the length of pencilends between 0 and 8 cm. So, the length of the pencil is 8 cm.
Measuring Length from Different Points
If we have a broken ruler and we want to measure the length of an object, keep the object at any starting cmmark and subtract it from ending cmmark.
In the figure, you can see that starting cmmark is 3 and ending cm mark is 8.
Now, subtract this to get the answer 8 cm  3 cm = 5 cm. So, the length of the eraser is 5 cm.
The basic unit of length is meter (m). The smallest unit is millimeter while the largest is kilometre.
Units of Length:
10 millimeters (mm)

=

1 centimeter (cm)

10 centimeters (cm)

=

1 decimetre (dm)

10 decimeters (dm)

=

1 meter (m)

10 meters (m)

=

1 decametre (dam)

10 decametres (dare)

=

1 hectometre (hm)

10 hectometers (hm)

=

1 kilometer (km)

1 m is taken as the basic unit of measuring length.
1 dam

=

10 m

1 hm

=

100 m

1 km

=

1000 m

1 dm

=

\(\frac{1}{10}\) m

1 cm

=

\(\frac{1}{100}\) m

1 mm

=

\(\frac{1}{1000}\) m

You might like these
We know that, seven days of a week are Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday. A day has 24 hours. There are 52 weeks in a year. Fill in the missing dates and answer the questions: 1. John was born 6th January. What day of the week is it?
Time duration tells us how long it takes for an activity to complete. We will learn how to calculate the time duration in minutes and in hours. Time Duration (in minutes) Ron and Clara play badminton every evening. Yesterday, their game started at 5 : 15 p.m.
In mental math on time, we will solve different types of problems on reading time to the nearest minutes, reading time to the exact minutes, use of a.m. and p.m., 24hours clock, days in a year and calculating days.
The clock shows time in 12 hour cycle. The first cycle of the hour hand completes at 12 o’clock midday or noon. The second cycle of the hour hand completes at 12 o’clock midnight. ‘a.m.’ and ‘p.m.’ are used to represent the time of the day. ‘a.m.’ stands for ante meridiem,
What are the different ways of reading time? There are many ways to read time: (a) When hourhand is exactly at any number and minutehand is at 12, we read the time in full hours. If hour hand is at
The hands of clock move from left to right. This is called the clock wise motion. When the minute hand is on the right side of the clock, it shows the number of minutes past the hour. When the minute hand is on the left side of the clock, it shows the number of minutes to
In mental math on measurement we will solve different type of problems on conversion of length, conversion of mass and conversion of capacity.
In 4th grade measurement worksheet we will solve different types of problems on measurement of length, measurement of capacity, measurement of mass, expressing one unit in terms of another, addition of length, subtraction of length, addition of mass, subtraction of mass
In worksheet on measurement we will solve 27 different types of questions.1. John bought 27.5 m of cloth. How many cm of cloth did he buy? 2. Convert a distance of 20 km to metres. 3. Convert 98 km
In subtraction of capacity we will learn how to find the difference between the units of capacity and volume. While subtracting we need to follow that the units of capacity
In addition of capacity we will learn how to add the different units of capacity and volume together. While adding we need to follow that the units of capacity i.e., liter and milliliter
In subtraction of mass we will learn how to find the difference between the units of mass or weight. While subtracting we need to follow that the units of mass i.e., kilogram and gram
In addition of mass we will learn how to add the different units of mass or weight together. While adding we need to follow that the units of mass i.e., kilogram and gram are converted into grams
The process of subtraction of units of length is exactly similar to that of subtraction of ordinary numbers. Learn how the values of length are arranged in different columns for the subtraction of length. 1. Subtract 12 m 36 cm from 48 m 57 cm Solution:
The process of addition of units of length is exactly similar to addition of ordinary numbers. Learn how the values of length are arranged in different columns for the addition of length. 1. Add 15 m 18 cm and 16 m 22 cm
Related Concepts
● Units
for Measuring Length
● Measuring
Instruments
● To
Measure the Length of a Linesegment
● Perimeter
of a Figure
● Unit of
Mass or Weight
● Examples
on Unit of Mass or Weight
● Units
for The Measurement of Capacity
● Examples
on Measurement of Capacity
● Measurement
of Time
● Read a
Watch or a Clock
● Antemeridian
(a.m.) or Postmeridian (p.m.)
● What Time it is?
● Time
in Hours and Minutes
● 24 Hour Clock
● Units of Time
● Examples
Units of Time
● Time Duration
● Calendar
● Reading
and Interpreting a Calendar
● Calendar
Guides us to Know
4th Grade Math Activities
From Units for Measuring Length to HOME PAGE
Didn't find what you were looking for? Or want to know more information
about Math Only Math.
Use this Google Search to find what you need.
Share this page:
What’s this?
New! Comments
Have your say about what you just read! Leave me a comment in the box below. Ask a Question or Answer a Question.