You have 25 candies. Your friend gives you 18 more. How many candies do you have now?
25+18=43
You have 15 balloons. Your friend gives you 12 more. How many balloons do you have now?
15+12=27
There are 28 birds on a tree. 17 more birds fly to the tree. How many birds are there now?
28+17=45