Bottom Line: a whopping 2800 common core aligned middle school math problems presented in a variety of formats for Free. You won't need any number sense to figure out the absolute value of this deal.
Bottom Line: When your children have moved on from memorization of basic math facts and need support with math from Grade 4 through college, then look no further. This app has the answer to the most complex of problems free and thorough explanations for a fair price.
In Match-Up Math, children must match tiles with equal values in order to make them disappear. For example, 2+2 can be matched with a tile that says 4 or one that says 3+1.
When all the tiles are cleared, the player moves on to the next level. The difficulty increases as the player progresses and the backgrounds of the boards change, which gives the player a nice sense of progression. Someone in iTunes described it as "Mahjong Math." (I've never played Mahjong.)