Crypto-Riddles are a great way to get your kids practicing their basic math skills. This edition contains jokes with a Christmas theme. Each puzzle contains 10 to 12 math problems which must be solved in order to decode a silly joke or riddle. The focus is on addition, subtraction, multiplication and division for facts 1 through 12. The puzzles are also self-checking in that students won't be able to decode the riddle if they have gotten a wrong answer or two. Each printable page of Crypto-Riddl