What's both fun and challenging? These Riddles and Codes worksheets, which pack a one-two punch of brain teasers.

What has teeth but no mouth? Find out the answer to this and more riddles in this Riddles and Codes worksheet.

What can run but can't walk? Reveal the answer to this clever riddle by cracking the number code in this Riddles and Codes worksheet.

First and second graders will be cracking codes and cracking up while they uncover this Valentine’s Day joke!

Secret codes beat boring basic math practice any day! Your child can use his addition skills to discover the mystery location of this worksheet.

Who's hiding in the subtraction problems? Use your super subtraction skills to find out which colors to add to the drawing!