Find out what fills a room, but takes up no space, with this riddle and math combo worksheet. Use subtraction skills to solve the riddle on this math worksheet.

What has to be broken before it can be used? Find out the answer to this riddle and more in this fun riddle and math combination worksheet.

Subtract your way through these math problems, and you'll be pleasantly surprised with the answer to a tricky riddle.

This math and riddle worksheet gets your kid to figure out what runs without legs. Try our subtraction worksheet for an added dose of mystery with your math.

This subtraction worksheet gets your child to solve problems to answer a tricky riddle. Find out the answer to "What kind of room has no windows or doors?"

Review two-digit subtraction the fun way, with this subtraction crossword!