There are 98 pupils in a classroom. 65 are boys. How many are girls?
There were 98 birds in a tree. 83 flew away. How many are left?
Emma is 52 years old and Judith is 37. What is the sum of their ages?
A shop has 855 bottles of drink. 613 were sold. How many are left?
If there were 61 eggs on a shelf, and then 31 of them fell down, how many eggs are left?