A challenging math puzzle game where all you have to do is add all of the numbers on the board together. But there is a catch as you can only add equal numbers together or numbers whose sum equals a number already on the board. For example, you can add 3 and 3 together because they are equal. If 7 is on the board you can combine 5 and 2 together. Although 5 and 2 aren't equal their sum is 7 which is on the board. addition game, math puzzle, brain teaser, educational game, HTML5 math game, number combinations, addition practice, problem solving, mobile math game, school math, math skills, logic game, number game, online math game, fun math, kids math, strategy game, addition challenge, number puzzles