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From Pac Apps:
How fast are you at basic fact addition?Summed Up is a fun interactive way to learn addition basic facts to 20. You choose the total to be made, then race against the clock to make the total in as many different ways as possible in 1 minute. Great for those just beginning to add, to those who are confident mathematicians. This simple to use app will have you racing through your basic facts in no time.FeaturesTotals to be made: 5,8,10,12,16 & 19.Builds basic facts knowledge in a fun way.Helps with instant recall of basic facts.Make the total using two (4+4=8) or three (3+4+1=8) addends.No two games are the same.1 minute per game.All correct answers can be displayed at the end of the game.Running total of how many correct answers while you play.