Addition & Subtraction Fluency
8 weeks · 3 milestones
Develop fluency with addition and subtraction within 20 (Grade 1) and within 100 (Grade 2), including word problems and mental strategies. Proof: 80%+ on Khan Academy Grade 1–2 Math course mastery meter (screenshot with name visible), or teacher-graded test at 80%+.
Milestone map
Milestone map
3 milestones
Reach instant recall of all addition facts to 20 and their corresponding subtraction facts. The goal is fluency — answers in under 3 seconds without counting on fingers. A parent or teacher gives timed flashcard drills (2 minutes, 40 mixed facts) and checks that at least 35 of 40 are answered correctly.
Proof required
Submit a photo of a completed timed fact drill (addition and subtraction to 20, 40 questions, 2-minute limit) with a parent or teacher note confirming the score and timing.
What gets checked
- 35 of 40 facts answered correctly within 2 minutes
- No finger-counting observed by verifier during the drill
- Both addition and subtraction facts to 20 included — not just addition