Goal of Add It Up is to select numbers that add up to the target sum. You only have a limited amount of time to do so. The more numbers you select to get to the target sum, the higher your score will be. The faster you solve a sum, the higher your score will be.
Place one by one the 25 robots (randomly selected from 6 each with values 0 to 5) on the board. Scoring is per line (horizontally or vertically). Single robots count their value. Two identical robots in a line count 10 times the value. Any three identical robots in a line count 100. The lowest scoring line (horizontally or vertically) is your score for a level.