Engage your students with these fun worksheets and centers to work on numbers up to 20! These worksheets are great to show your students how to represent, write and recognize numbers up to 20, you will find 6 Easy to prep centers too.This resource includes 20 worksheets and 6 Centers to work on number sense up to 20.You will find 20 worksheets, each worksheet focuses on one number from 1 to 20, the tasks include coloring, tracing, counting, identifying the number, cutting, and pasting, and more.