Blast off into fact fluency! This low-ink, space-themed pack gives students 300 single-digit addition problems (sums to 20) arranged in speedy three-column drills. Kids set a timer, solve, and color the simple line art (rockets, aliens, planets) for a calm, focused practice. Includes cover, printable worksheets, and matching answer keys—perfect for warm-ups, centers, homework, RTI, and homeschool. Categories (Grade Level) Kindergarten, Grade 1, Grade 2 Subject Area Mathematics → Operations & Alg