**TOPIC 4: UNITS**

**A unit** – is defined as a symbol or sign which is assigned to a number to describe a kind of measurement made

**Units of Length**

Conversion of One Unit of Length to Another

Convert one unit of length to another

The conversion of one unit to another is done by considering the arrangement below

Example, from the above we get

Computations on Metric Units of Length

Perform computations on metric units of length

**Example 1**

Convert

Solution

**Unit of Mass**

Convertion of One Unit of Mass to Another

Convert one unit of mass to another

The conversion of one unit to another is done by considering the arrangement below

Example, from the above

The conversion of tonne to other units is done converting it to kilogram first and then from kilogram to the required unit.

1 tonne = 1000kg

Computation on Metric Units of Mass

Perform computation on metric units of mass

**Example 2**

Solution

**Units of Time**

The units of time are of two types, smaller and larger units of time.Smaller units of time includes seconds, minutes, hours and days.Larger units of time includes week, month, year, decade, century,millennium.

Convertion of One Unit of Time to another

Convert one unit of time to another

The conversion of units of time to another can be done by considering the arrangement below