### Missing numbers in addition

Several people have asked me about this... what to do when a 1st grader is struggling to grasp the concept of missing numbers in addition problems, such as 3 + ___ = 8.

I wrote the solution and posted it on my site... what to do when a child has a hard time finding the missing addends?

I wrote the solution and posted it on my site... what to do when a child has a hard time finding the missing addends?