First Grade Math Worksheets PDF | Free Printable 1st Grade ... These free printable 1st grade math worksheets are made up of colorful and amazing designs that will capture kid's interest to always work on them. Counting to 20 Print it ... Skip-count by 2's 5's and 10's Print it ... Count down by ones twos fives and tens Print it ... Roman numerals Print it ... Adding using number line Print it ...