Theory:

We can use decimals to measure the weight of the object.
 
Kilogram\((kg)\), Gram\((g)\) and Milligram\((mg)\) are the measurements used to measure the weight of the object.
1g=11000kg=0.001kg1mg=11000g=0.001g
Example:
1. Convert \(65\) \(g\) to \(kg\).
 
1g=11000kg65g=651000kg=0.065kg
 
Therefore, \(65\) \(g\) \(=\) \(0.065\) \(kg\).
 
 
2. Convert \(705\) \(mg\) to \(g\).
 
1mg=11000g705mg=7051000g=0.705g
 
Therefore, \(705\) \(mg\) \(=\) \(0.705\) \(g\).