Scott, Frankie, and Corey played in the snow for 4 hours. Scott made 5 snowballs and 2 snowmen. Corey made 7 snowballs. Frankie made 4 snowballs and a snow fort. How many snowballs did the boys make?

Molly and Dustin are decorating the school gym. Molly blew up 8 balloons and hung up 7 posters. Dustin blew up 6 balloons. How many balloons did Molly and Dustin blow up together?

Alan has 10 pennies. Bonnie has 6 fewer pennies than Alan. Jack has 5 more pennies than Alan. How many pennies does Bonnie have?

Last year, Omar read 15 books. This year, he read 6 books in April and 8 books in May. How many books has Omar read this year?

The first graders collected 8 cans of food for the food drive. The second graders collected 15 cans of food. The third graders collected 18 cans of food. How many more cans of food did the third graders collect than the first graders?