Simple addition & subtraction facts practice for 2nd grade - from my customer
One of my customers just sent this in. Her son made this neat interactive program to practice addition & subtraction facts as they're presented in Math Mammoth grade 2. This means the single-digit addition facts where the sum is more than 10, and the corresponding subtraction facts (e.g. 7 + 8, 6 + 9, 13 - 5, 16 - 7 etc).
Check it out!