This colorful printable combines outer space with double-digit addition--making for an exciting math learning experience for your second grader!

Mastering subtraction is a lot like mastering baseball - it takes practice. Students can practice their subtraction skills by using the regrouping method.

Your second grader will be delighted to take part in this double-digit addition printable with the help of a couple of furry monster friends!

Hurry! If these numbers aren't added quickly using regrouping, they'll pop!