Kilograms or grams?

In your book, Maths Mela (Chapter 8), we match things to the unit that is convenient for weighing them: kilograms or grams.

Heavy things are weighed in kilograms (kg). The book's example is a baby: a baby weighs a few kilograms. A table and a refrigerator are much heavier, so we weigh them in kilograms too. It would take thousands of grams to say how much a table weighs!

Light things are weighed in grams (g). An eraser, a pin, a paper clip, a pen, a feather and a watch are all much lighter than 1 kg. A pin is only a tiny part of a kilogram, so grams are the easy way to say how heavy it is.

A good way to decide: think of the 1 kg salt packet. If the thing is much lighter than the salt packet, use grams. If it is as heavy or heavier, use kilograms.