Page 155 - Touchpad Mathematics_Ver1.0_C4

Looking at this unfair practice, the villagers became annoyed and complained to the
king. They demanded that the cloth merchant use a standard measuring tape to ensure

everyone received the same, fair length of cloth for their money.
Name the instrument/s that is/are:

1. Used to measure the length of a line. ___________________
2. Used by shopkeepers to measure cloth. ___________________

3. Used by tailors to take measurements. ___________________

4. Used in cars and bikes to measure distance. ___________________

21 st #Subject Enrichment
Century
Units of Length skills

Centimetre (cm), metre (m) and kilometre (km) are some standard units of length.

Millimetre Centimetre Metre Kilometre

Millimetre is the Centimetre is the small Metre is another Kilometre is the
smaller unit of unit of length. We unit of length. We bigger unit of length.
length. We measure measure smaller lengths measure longer We measure bigger
very tiny lengths like the length of a lengths like the lengths like the
like the thickness of crayon, length of a pencil, length of a cloth and distance between two
a coin, length of an length of a notebook, etc., wall, height of a tree, cities in kilometres.
ant etc. We denote in centimetres. We denote etc., in metres. We We denote kilometre
millimetre by 'mm'. centimetre by ‘cm’. denote metre by ‘m’. by ‘km’.

Height of tree

Measuring short Lengths

We use a scale to measure the length of an object. The scale has two types of marks —
long marks and short marks. The long marks on the scale are 1 cm apart. Each
centimetre is divided into 10 small equal parts called
millimetres (mm). Interesting Facts
The giraffe has the longest
neck (up to 3 metres) in
the animal kingdom.

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Mathematics 3 Measurement of Length