- Multiplication in metric measures
As the metric measures are in powers of ten, multiplication in metric measures is the
same as in the number system.
Eg. : Multiply : 5 m 12 cm by 4
5m 12 cm = 5.12 m
Therefore, 5.12 × 4 = 20.48 m
= 20 m 48 cm
Note : Multiplication or division must be carried out only after converting the measures
into a single unit, with or without a decimal point
- Division in metric measures
As the metric units are in powers of ten, division in metric measures is also the same
as in the case of number system.
Eg. :Divide 3 l 380 ml by 20
3l 380 ml = 3380 ml
3380 ÷ 20 = 169
Therefore, 3380 ml ÷ 20 = 169 ml
Division in metric measures may also be taught to the child through heaps of sticks of
varying sizes. While the values are converted into highest measure in multiplication,
the conversion to the lowest measure is to be made in division.
Every 10 small sticks may be replaced by one big stick and so on. This type of
grouping numbers will help the child to understand formulation of frequency tables in
statistics. This method facilitates discovery in the child.
