Printable addition practice where sums range up to 20, including totals that cross 10. Includes an answer key on every set. Recommended for Grade 1–2.
Each worksheet uses random addition problems where both numbers are chosen from 1–20, so sums range up to 20, including totals that cross 10. This matches the Grade 1–2 range in most math curricula. Set the number of problems and pages below, then download a print-ready PDF with a matching answer key.