These worksheets are grade-specific and target the standards students should be learning in first grade. Download these colorful worksheets, from ArgoPrep, which were created by teachers. These worksheets will help first graders learn and practice all they need to know for math in first grade. The worksheets are just the right thing for students to practice the skills they have learned in order to become proficient in them. These worksheets are a quick and easy way to check for understanding or review a concept.