For lesson 8 in math we used a Hundred Charts to help students figure out what ten more and ten less is. If your child is struggling with the “Ten More, Ten Less” concept, you may have your child look at this chart for help.
You can also have your child draw how many groups of ten there are and how many ones. Then, for 10 more, add a group of ten. Erase the extra one, and then cross out a group of ten for “ten less.”
Here is an example of this:
