Single-Digit Horizontal Drills Answer Key

This worksheet presents thirty horizontal addition equations featuring combinations of single-digit numbers. Students complete each equation by writing the correct sum in the answer box. The format encourages quick, mental computation and helps develop fact recall. Repetition with a variety of addends supports mastery of sums within twenty. This worksheet works well for practice sessions, assessments, or daily math warm-ups.

Curriculum Matched Skills

Mathematics – Single-Digit Addition Fluency

Mathematics – Mental Math Strategies

Mathematics – Number Sense Development

Mathematics – Speed and Accuracy in Computation

This worksheet is part of our Addition Mad Minute Worksheets collection.