We will discuss about measuring length. Suppose children are running a race of 100 meter (m). Sam is measuring the height of the wall in meters. The length is measured in meters. A meter is too long to be drawn here. Small lengths are measured in centimeters. Ron is measuring the width of his book in centimeters.
100 centimeters equal 1 meter
1 meter equal 100 centimeters
We write centimeter in short form as ‘cm’ and meter as ‘m’. So we can write in short as;
100 (cm) equal 1 (m)
1 (m) equal 100 (cm)
The following are three kinds of meter scales generally used by everyone.
(i) A meter rod which is made of iron or wood is used by cloth merchants for measuring cloth.
(ii) A meter scale is used by masons or carpenters.
(iii) A meter scale is used by tailors.
Extra questions for sharp students on measuring length!
1. Write meter or centimeter in the blank space:
(i) My pencil is 10 ____________ long.
(ii) My height is 90 ____________.
(iii) Our classroom is 5 ____________ long.
(iv) This tree is 3 ____________ high.
(v) My hair pin is 3 ____________ long.
2. Measure the following length is centimeters:
Students need to use the ruler or scales to measure the length.
3. Measure the following:
AB is ____ centimeters long.
EF is ____ centimeters long.
MN is ____ centimeters long.
XY is ____ centimeters long.
4. A train is 150 meters long and the platform at the station is 285 meters long. How far does the train travel in crossing the platform?
5. A cloth is sold at $7 a meter. Find the price of 65 meters of the same cloth?