Multiplication is Good, Addition and Subtraction Not as Good – Kids Math Fun — Second Grade Review

The application presents the user with a problem and a choice of four answers. This works well with multiplication. However with addition and subtraction the user only needs to figure out what the answer is in the ones column, once you know that answer you can choose the correct answer as only one of the four answer choices has that same number in the ones column. There need to be more answer choices with the same number in the ones column.
Review by CharlieChris on Kids Math Fun — Second Grade.