Measurements

Mass and capacity

Example 1: Ahmad wants to measure the mass of his pencil

The mass of the pencil is 3 grams. We can also write it as 3g

Example 2: Sara wants to measure the mass of a sock of Flour.

The mass of the sack is 1 kilogram

We can also write it as 1 kg.

To measure the mass, we use kilograms for heavier objects and grams for lighter objects

There are 1000 grams in 1 kg.

All measures the mass of a sack of rice. The mass of the sack is 3 kg

We can also write the mass in grams.

1 kg = 1000 g

 3 kg = 3 × 1000 g

kg = 3000 g

We use different weights to measure the mass of objects

The mass of a basket of oranges is 2 kg 500 g

We can also write this mass in grams

2 kg 500 g = 2 kg + 500 g

= 2000 g + 500 g

= 2500 g

The mass of the basket of oranges is 2500 g.

Can you convert 1 600 grams into kilograms and grams?

1 600 g = 1000 g + 600 g

= 1 kg + 600 g

= 1 kg 600 g