Conversion of Standard Unit of Length

We use the metric system of measurement. The basic units to measure length or distance is metre, kilometre and centimetre. Kilomitar is the largest unit of length. 

1 metre = 100 centimetres or 1 m = 100 cm

1 centimetre = \(\frac{1}{100}\) metre or 1 cm = \(\frac{1}{100}\) m

1 kilometre = 1000 metres or 1 km = 1000 m

For the conversion of standard unit of length the relation between the three units are given below:

1 kilometer = 1000 meters

1 meter = 100 centimeters

Thus,

(i) To convert centimeters (cm) into meters (m), the number of cm is divided by 100.

(ii)  To convert kilometer (km) into meters (m), the number of km is multiplied by 1000.

There are other units also for measuring length. A very small length is measured in millimeters (mm).

In between centimeter and meter there is a unit of measuring length named decimeter (dm). It is 10 times of a centimeter.

1 decimeter = 10 centimeters (1 dm = 10 cm)

and, 10 decimeters = 1 meter (10 dm = 1 m)

Now, 10 mm = 1 cm (1 cm = 10 mm)

10 cm = 1 dm (1 dm = 10 cm = 100 mm)

10 dm = 1 m (1 m = 10 dm = 100 cm = 1000 mm)

1 km = 1000 m = 100000 cm

On the basis of these facts, one type of unit is converted into another.

It is the 10th part of a centimeter, i.e., 10 mm = 1cm or 1 cm = 10 mm.

In between centimeter and meter there is a unit of measuring length named decimeter (dm). It is 10 times of a centimeter.

1 decimeter = 10 centimeters (1 dm = 10 cm)

and, 10 decimeters = 1 meter (10 dm = 1 m)

Now, 10 mm = 1 cm (1 cm = 10 mm)

10 cm = 1 dm (1 dm = 10 cm = 100 mm)

10 dm = 1 m (1 m = 10 dm = 100 cm = 1000 mm)

1 km = 1000 m = 100000 cm

On the basis of these facts, one type of unit is converted into another.


Worked-out problems on conversion of standard unit of length:

1. Convert the following into centimeters:

(i) 4 m

Solution:

4 m

To convert ‘m’ into ‘cm’, the number of meters is multiplied by 100. The product followed by ‘cm’ is the result.

= (4 × 100) cm

= 400 cm


(ii) 10 m

Solution:

10 m

To convert ‘m’ into ‘cm’, double zeroes (00) are added after the number of meters and unit ‘cm’ is added to it instead of ‘m’.

= (10 × 100) cm

= 1000 cm


(iii) 15 m

Solution:

15 m

To convert ‘m’ into ‘cm’, the number of meters is multiplied by 100. The product followed by ‘cm’ is the result.

= (15 × 100) cm

= 1500 cm

2. Convert the following into centimeters:

(i) 3 m 55 cm

Solution:

3 m 55 cm

First ‘3 m’ is converted into ‘cm’ and then given ‘cm’ is added to it.

= (3 × 100) cm + 55 cm

= 300 cm + 55 cm

= 355 cm


(ii) 17 m 8 cm

Solution:

17 m 8 cm

First ’17 m’ is converted into ‘cm’ and then given ‘cm’ is added to it.

= (17 × 100) cm + 8 cm

= 1700 cm + 8 cm

= 1708 cm


(iii) 6 m 67 cm

Solution:

6 m 67 cm

First ‘6 m’ is converted into ‘cm’ and then given ‘cm’ is added to it.

= (6 × 100) cm + 67 cm

= 600 cm + 67 cm

= 667 cm

 

3. Convert the following into metre and centimeters:

(i) 736 cm

Solution:

736 cm

To convert ‘cm’ into ‘m’ and cm, the first two digits from the right are taken as ‘cm’ and the rest is written as ‘m’.

= 7 m 36 cm

(ii) 1875 cm

= 18 m 75 cm

(iii) 305 cm

= 3 m 05 cm or 3 m 5 cm

 

4. Convert the following into meters:

(i) 8 km

Solution:

8 km

As, 1 km = 1000 meters so to convert kilometers into meters, the number of km is multiplied by 1000 or three zeroes are placed after the number of km and meter is written in place of km.

= (8 × 1000) m

= 8000 m

(ii) 3 km

= (3 × 1000) m

= 3000 m

(iii) 6 km

= (6 × 1000) m

= 6000 m


5. Convert the following as required:

(i) 5 km 325 m into meters

Solution:

5 km 352 m

= (5 × 1000) m + 325 m

= 5000 m + 325 m

= 5325 m


(ii) 15 dm 7 cm into centimeters

Solution:

15 dm 7 cm

= (15 × 10) cm + 7 cm

= 150 cm + 7 cm

= 157 cm

[Since, 1 dm = 10 cm]


6. Convert the following:

(i) 3 km 315 m into meters

Solution:

3 km 315 m

= (3 × 1000) m + 315 m

= 3000 m + 315 m

= 3315 m


(ii) 5006 m into kilometre

Solution:

5006 m

= (5006 ÷ 1000) km

= 5 km 006 m

= 5 km 6 m

(Since, first three digits number is taken for metre and the rest for km)


(iii) 375 cm into decimeters

Solution:

375 cm

= (375 ÷ 10) dm

= 37 dm 5 cm

(Since, 10 cm = 1 dm, so the first one digit from right is for ‘cm’ and therest for ‘dm’)


(iv) 2 m 5 dm into decimeters

Solution:

We know, 1 meter = 10 decimeters

2 m 5 dm

= (2 × 10) dm + 5 dm

= 20 dm + 5 dm

= 25 dm


We know the relation between the units of length on that basis we will solve more problems as required for the conversion of standard unit of length.

Related Concepts

Standard Unit of Length

Addition of Length

Subtraction of Length







3rd Grade Math Worksheets

3rd Grade Math Lessons

From Conversion of Standard Unit of 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?

Recent Articles

  1. Months of the Year | List of 12 Months of the Year |Jan, Feb, Mar, Apr

    Apr 20, 24 05:39 PM

    Months of the Year
    There are 12 months in a year. The months are January, February, march, April, May, June, July, August, September, October, November and December. The year begins with the January month. December is t…

    Read More

  2. What are Parallel Lines in Geometry? | Two Parallel Lines | Examples

    Apr 20, 24 05:29 PM

    Examples of Parallel Lines
    In parallel lines when two lines do not intersect each other at any point even if they are extended to infinity. What are parallel lines in geometry? Two lines which do not intersect each other

    Read More

  3. Perpendicular Lines | What are Perpendicular Lines in Geometry?|Symbol

    Apr 19, 24 04:01 PM

    Perpendicular Lines
    In perpendicular lines when two intersecting lines a and b are said to be perpendicular to each other if one of the angles formed by them is a right angle. In other words, Set Square Set Square If two…

    Read More

  4. Fundamental Geometrical Concepts | Point | Line | Properties of Lines

    Apr 19, 24 01:50 PM

    Point P
    The fundamental geometrical concepts depend on three basic concepts — point, line and plane. The terms cannot be precisely defined. However, the meanings of these terms are explained through examples.

    Read More

  5. What is a Polygon? | Simple Closed Curve | Triangle | Quadrilateral

    Apr 19, 24 01:22 PM

    Square - Polygon
    What is a polygon? A simple closed curve made of three or more line-segments is called a polygon. A polygon has at least three line-segments.

    Read More