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units of Measuring Mass (Weight)

We use standard units such as milligram, gram and kilogram to weigh objects.

Milligram Gram Kilogram

•
•
• It is used to measure very It is used to measure It is used to measure heavy
light things. the weight of lighter weights. It is the standard unit
• It is denoted by 'mg'. objects. of weight.

Examples: Weight of a • It is denoted by 'g'. • It is denoted by ‘kg’.
feather, a safety pin, a Examples: Weight of a Examples: Weight of a boy, a
medicine. book, a packet of chips. basket full with apples.

Conversion

Kilogram into gram

To convert kilograms into grams, we multiply the number of kilograms Note
by 1000. 1 kg = 1000 g

Example 1: Convert the following into g. 1 g = 1000 mg.

(a) 9 kg (b) 4 kg
Solution: (a) 9 kg = (9 × 1000) g = 9000 g (b) 4 kg = (4 × 1000) g = 4000 g

gram into Kilogram Knowledge Desk

we use different standards of measuring weights.
To convert grams into Kilograms, we Metric system Indian system
divide the number of grams by 1000. 11 g 664 mg (approx.) 1 tola
933 g 10 mg (approx.) 1 ser (80 tola)
Example 2: Convert 8000 g into kg. 37 kg 324 g (approx.) 1 maund (40 ser) or mann

Solution: 8000 g = (8000 ÷ 1000) kg

= 8 kg 1000 8000 8 kg

Thus, 8000 g = 8 kg. 8000
0 g

teacher’s
tip Ask the students about the use of different units of mass with the help of examples related to their daily life.

152 Mathematics-3