#1 - Stack 100 cups, to see which team could build the tallest tower.
#2 - 100s Chart Puzzles
To see who could put all the puzzles together the fastest.
(I originally posted about this here.)
#3 - Put together a 100-piece puzzle.
#4 - We covered 10 ten frames.
#5 - We placed popsicle sticks in tally mark formations so that they added up to 100.