Valentines Day Worksheets Color by Numbers 100s Chart Activity Enjoy a sweet Valentine's Day story time followed by this Valentines Day Math Worksheets to help pre-k, kindergarten, and first grade students work on numbers 1-100.This fun Valentines Day color by number helps children work on number recognition to 100 using a hundreds chart. As students color by code on these valentines day worksheets they will reveal a mystery picture from the story.