Help children develop mental calculation and counting with Roll A Sum dice. Simply roll the dice and let the numbers guide your counting. Firstly roll the dice and look at the upper face, then group the dice together that are related. Choose the dice you want to use and the best dice to start your sum. Fantastic way to practice mental math calculations. Featuring place value ones to hundreds, ten frames and equations. Color-coded so that each theme or concepts is presented in its own color. Details: Multicolored 8" x 6" x 1" package size For ages 4 and up Contents: 10 dice 1 handy carry sack