BASIC MEASUREMENTS

MASS

MASS

• The mass of an object is the amount of matter in it.

• Mass is usually stated as weight in everyday situations.

• The metric units for mass are miligram (mg), gram (g), kilogram (kg) and tonne.

EXAMPLE

The mass of a box of chocolate is 141 gram (g)

The mass of a bag of sugar is 1 kilogram (kg)

The mass of a bag of cement is 50 kilogram (kg)

The mass of a bag of rice is 5 kilogram (kg)

The mass of a small car is 1 tonne (1000 kg)

• 1 g = 1000 mg• 1 kg = 1000 g• 1 tonne = 1000kg

mg is the smallest unit

tonne is the largest unit

Measure The Mass Of An Object

a) A digital electronic scale

b) A bathroom scale

479 g

70 kg

a) A kitchen scale

200 g

Convert One Metric Unit Of Mass Into Another

Tonne kg g mg

X 1000 X 1000 X 1000

1000 1000 1000

Convert 4 kg into g

= 4 kg = 4000 g

Convert 5500 kg into tonne

= 5= 5.5 tonnes

Convert 2 tonnes 389 kg into tonne

= 2 tonnes + 389 kg= 2 tonnes + 0.389 tonne= 2.389 tonnes Convert 2 tonnes 567 kg

into kg

= 2 tonnes + 567 kg= (2 )kg + 567 kg= 2000 kg + 567 kg= 2567 kg