There are 6 girls and 4 boys in Ms. Gibson's class, so there are 6 + 4 = 10 kids total. The document provides examples of addition, subtraction, multiplication, and division word problems. For subtraction, it asks how many sheep Mary has now if she originally had 9 sheep and 3 ran away. For multiplication, it asks how many friends there are if there were 7 trucks and 3 friends in each truck. For division, it asks how many barns are needed if there are 21 pigs that each barn can hold 7 pigs.