Page 80 - Fun with Mathematics 2

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STARTER

Observe the given pictures and put a tick (ü) or a cross (û) in the following
statements.

(a) An apple is heavier than a pumpkin.

(b) A lemon is lighter than a brinjal.
(c) The weight of two lemons is equal to the weight of four brinjals.

(d) The weight of one brinjal is equal to the weight of two lemons.

(e) The weight of two pumpkins is equal to the weight of ten apples.

UNITS FOR MEASURING WEIGHT

There are several units (in the metric system) for measuring weight but here we

will study only about kilogram (kg) and gram (g).
Different devices are used for measuring the weight of different objects.

For example, pan balance, electronic weighing machine, spring balance, etc.

Pan balance Electronic Spring Balance

weighing machine Balance
Kilogram (kg)

Kilogram is the standard unit of weight. Kilogram is written as kg in short
form. It is used for measuring the weight of heavier objects such as a bag of

rice, a bag of fruits and so on. We also measure our weight in kg.

Gram (g)
Gram is used for measuring the weight of lighter objects such as apple, a lemon

and so on. Gram is written as g in short form.

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