A few coins

This task is about identifying the least number of coins to make an amount.
 
Tick the boxes to show the least number of coins Mia could use if she needed these amounts of money.
The first one has been done for you.
 
  Choice of coins
 

  10c 20c 50c $1
Mia saved 70c        
Mia saved 30c        
Mia saved 80c        
Mia saved $1.10        
Mia saved $1.50