The End of Two and Three Digit Addition and Subtraction!
By Lisa Holder - O'Sullivan
Published: October 15, 2009.
A story that gives kids a fun way to understand place value and its roll in adding and subtracting double digit numbers. Created by a Second grade gifted education teacher. This is one of the hardest concepts in primary math for students to master and yet one of the most important math skills students need. Arm your child or students with this story to help them in their understanding.