Lower Elementary
Question: Mrs. Smith’s class is having a pizza party. If one pizza feeds 3 children, how man pizzas will Mrs. Smith need to order to feed 24 children?
Answer: 8 pizzas
Upper Elementary
Question: A number is 5 times the sum of it’s digits. What is the number?
(Hint: The number has 2 digits.)
Answer: 45
Note that 4 + 5 is 9 and 9 x 5 = 45.
Middle School
Question: Rick, Sam, Kelly, Susan, and Martin are begin working for the same company on the same day. Their new boss want to help them get to know each other better and suggests each person have lunch with each other person. How many total lunches does it take for each person to have lunch with each other person only once?
Answer: 10 lunches
Note: Rick has lunch with the 4 other people, Sam has already had lunch with Rick so he only has lunch with 3 of the other new employees. In this way the total number of lunches will be 4 + 3 + 2 + 1 = 10.
High School
Question: Let 2(7n – 6) = 8(n + 2). What is the value of n?
Answer: n = 3.
Note: Students should not use calculators to solve this problem. Since 2(7n – 6) = 8(n + 2) we can let 8(n + 2) = 23(n + 2) = 2(3n + 6). Then we let 7n – 6 = 3n + 6, solving this equation we find n = 3.
