Browse Printable 1st Grade Math Worksheets | Education.com Browse Printable 1st Grade Math Worksheets. Award winning educational materials designed to help kids succeed. ... Learners will work on simple addition and subtraction skills as they complete 24 one-digit practice problems in this appealing math worksheet. 1st grade. Math. Worksheet. Addition to 20 Check-in. Worksheet. Addition to 20 Check-in.