Annika Riz loves math more than anything. Shes trying to teach her dog, Prime, to count. Shes determined to beat fellow math whiz Simon Ellis in a Sudoku contest at the public library. She even sleeps under number-patterned sheets. But Annikas best friends Kelsey and Izzy think math is boring. All they care about is the upcoming school carnival their principal is going to be dunked in a dunking tank and their class is going to have a booth selling home-baked cookies. But then disaster foils the friends cookie-baking plans. Can math save the day?,
