How many ways can you get to 100 Math Activity

Print the pages of your choice.  Cut and laminate the pages.  Have the children identify
 the number then stack the corresponding number of discs in each stack.  Continue
stacking discs until each circle is covered.  After the children have all the circles covered,
encourage them to count to 100 by 2's, 4's, 5's or 10's.

Count by 2's
Count by 4's
Count by 5's
Count by 10's

Here is a resource for the stackable discs.