‘Whizz-on-add’ (Whizz for short) is a mathematical game of fun incorporated into learning. Whizz makes you see, understand and love numbers from a whole new perspective. The game is based on the digital root concept – the individual digits of a number are added in one or more steps until it is reduced to its single digit.

Although it is most beneficial to students as mastering the powers of the digital root concept can help students vastly improve addition, subtraction, multiplication, or division skills and to therefore achieve better grades at school, it is also suitable for all age groups.

The game has four levels depending on the type of numbers featured in the deck of cards. Quickly work out the digital root of the numbers of the three open cards and where applicable, pull the card to the basket showing the respective digital root value. Tap the deck to open the next three cards. Collect three cards for each basket to finish the game. The game is time driven and points are awarded for having successfully completed the game. Keep playing until you improve your scores and/or your best time.