Every weekend Vernon sets you a maths challenge to get your mind working. See some of the creative ways you've got to the right answer!
2008/11/15/49742_2.jpg" alt="Jeff is making snowballs for a castle. He can make 15 every hour but 2 melt every 15 minutes. How long will it take him to make 420 snowballs?" />
Jeff is making snowballs for a castle. He can make 15 every hour but 2 melt every 15 minutes. How long will it take him to make 420 snowballs?
Jon in Cheshire used the washing up bubbles to help him work out the answer.