Marble fractions

This task is about finding fractions of numbers and writing them in their simplest form.
 
 

 
a)

 

Maraea had 18 marbles and lost 3 of them in a game. What fraction of her marbles did she lose? 
Write your answer in its simplest form.
 
__________
 
b)
Tamatea had 18 marbles and lost 8 of them. How could you find what fraction of 18 marbles he still has? 
 

Show your working.

 

 

 

Answer (write the fraction in it's simplest form) : __________

 
c)
 
Leilani had 56 marbles and lost 7 of them. How could you find what fraction of 56 marbles she still has?
 

Show your working.

 

 

 

Answer (write the fraction in it's simplest form) : __________