Or download our app "Guided Lessons by Education.com" on your device's app store.
Two-digit addition troubling your kid? The only way to get the concept down is practice, practice ... and more practice! So give her a chance to boost her mental math ability and two-digit addition skills with a super hero worksheet. She'll answer a slew of two-digit addition problems, in order to figure out what secret power this hero boasts.
Check out the rest of the Super Powers! series for even more practice.