Print the page. Laminate the pages if you want to reuse them. Have the children roll a die. Have them identify the number on the die. Then have them put the corresponding number of mittens on the the snowman arms. The one who fills their page first is the winner.
Check your local scrap book store to find a mitten paper punch. At one time, a company named EC Success made a paper shaper version that would work perfectly for this activity.