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These equations have lost their signs! Only one sign — plus or minus — can make each equation true.

Two-digit addition troubling your second grader? The only way to get the concept down is practice, practice ... and more practice!

Spark your second grader's interest in practicing math with a two-digit addition worksheet--complete with a super hero and his special power!

To figure out the name of the mystery super hero, your child simply needs to answer a page full of two-digit addition problems!

First graders will enjoy adding with this colorful fruit and vegetable-themed worksheet!