You just won an amazing prize, but it’s locked in a safe! Thankfully, the code is a single integer between -40 and 40, and you’ve got the clues to solve it.

Addition doesn't have to be puzzling—practice finding sums with these puzzle boxes!

Put your addition skills to the test with these puzzle boxes for second and third graders!

Put your addition skills to the test with these puzzle boxes for second and third graders!

Add a fun twist to math practice with these second- and third-grade addition puzzles!

Put your addition skills to the test with these puzzle boxes for second and third graders! 

Put your addition skills to the test with these puzzle boxes for second and third graders!

Addition doesn't have to be puzzling—practice finding sums with these second- and third-grade puzzle boxes!