Celebrate St Patrick's Day with these no prep addition to 20 number line practice worksheets for 1st grade. Students use number lines to solve each addition problem and write the sum on the page. Use this resource for March math centers, morning work, independent practice, small groups, intervention, early finishers, homework or sub plans. Just print, copy and go. What’s Included:50 printable pagesAddition to 20 practicesEach problem includes a number line to support counting-on strategiesFun Lu