Adding and subtracting fractions

This task is about addition and subtraction of fractions.

a)
 
In a team race, Kylie ran 14 of a kilometre and then tagged Joshua who ran for 18 of a kilometre.
 
Altogether, what fraction of a kilometre had they run? __________
 

 
 
 
b)
Marie and Liam shared a pie. Marie ate 13 of the pie and Liam ate 15 of the pie.
What fraction of the pie
 
 

i)
 
ii)

 

... did they eat altogether? __________
 
... was left over? __________
 
 
 
c)
 
Wiremu had 37 kilogram of cheese. He was given another 25 kilogram.
 
What fraction of a kilogram of cheese did Wiremu now have? __________