Count the coins and make the change.
Coin Counter asks the child to add up a handful of coins, identify a named coin, or choose the coins that make a given amount. Money is the most common place children meet addition outside a classroom, and coins are awkward in a useful way: their value has nothing to do with their size.
The 5-7 level counts groups of two to five coins drawn from the three lowest values, and mixes in rounds that ask which coin is which.