Sam is inviting people to his birthday party. His mom gives him 30 invitations to give to his friends. He gave 18 invitations to his friends in the neighborhood and will hand the rest out at school. How many invitations does Sam have for his friends at school?
Taylor's mom made 36 ounces of lemonade. If Taylor pours 5 ounces into a cup and drinks it all, then pours 17 ounces into a cup and drinks all of it again, how many ounces of lemonade are left?
The Jones family is going to the Zoo! If tickets cost $15.00 for adults and $8.50 for kids, how much will tickets cost for two adults and three kids?
Mrs. Presley buys 100 pieces of candy to hand out to kids on Halloween. At the end of the night, she only has 8 pieces of candy left! If she gave everyone 2 pieces of candy, how many trick-or-treaters did Mrs. Presley have?
A movie theatre has 50 seats in total. If 27 tickets have been purchased for the opening night of Clue, how many seats are left?
A new building needs a total of 13 windows, the builder has been working hard and installed 4 windows already. If it takes the builder 3 hours to install each window, how long will it take him to install the rest?