There are 4 books on one shelf and 5 books on another. How many books are there altogether?
A boy caught 1 fish, and his brother caught 2 fish. How many fish do they have?
A child had 4 balloons. They buy 1 more. How many balloons do they have?
Three boys and three girls stand in a circle. How many children are in the circle?
5 children were playing when they were joined by 4 more children. How many children are there in total?