Don't let two-digit addition troubles get your child down! This fun worksheet—and the rest of the set—is all you need to get her addition abilities up to par. And it's got an extra special super hero theme, so it'll keep her interest piqued, too. Solving this page full of double-digit addition problems answers the mystery question—what is this super hero's code name?

Check out the rest of this series for even more two-digit addition practice!