On the surface, this worksheet is all about double-digit subtraction, but it also challenges your second grader to practice identifying odd and even numbers!

Laminate and display this puzzle to encourage students to think deeply about how each group of circles is the same and different. This works as a great hook when introducing the concept of odd and even numbers.

Don't let your second grader's math practice go to waste! This double-digit subtraction exercise also challenges her to identify odd and even numbers.