Bertha Day invited 12 friends to her birthday party. Party hats are sold in packs of 5. If she gives each friend one hat, how many packs does she need to buy?
Sign in or create an account to reveal answers, view the solution, and save your progress. Create a free account to unlock practice and keep track of your work.
First Mathematics Challenge (2023)
One puzzle per day. Cryptarithm, Magic Square, Summit. No sign-up required to play.
Play daily puzzle →Interactive problems and curated lessons—water pouring, magic squares, knight's tour, and more.
Browse library →See how you rank. Top solvers by problems solved correctly. Sign in to climb the ranks.
View leaderboard →First Mathematics Challenge (2023)