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The 38 steps

The path has 38 steps. Each table comes in two parts — the subtractions whose answer goes from 0 to 5, then from 6 to 10 — so that no more than six new facts are ever introduced at once, then is reviewed as a whole. From the −3 table onwards, a cumulative review mixes every table already seen; the last one shuffles all ten.

The steps of the Subtraction path
  1. 1−1 table (part 1)1 − 1 … 6 − 1 (answers 0 to 5)Free
  2. 2−1 table (part 2)7 − 1 … 11 − 1 (answers 6 to 10)Free
  3. 3Review of the −1 table1 − 1 … 11 − 1Free
  4. 4−2 table (part 1)2 − 2 … 7 − 2 (answers 0 to 5)Free
  5. 5−2 table (part 2)8 − 2 … 12 − 2 (answers 6 to 10)Free
  6. 6Review of the −2 table2 − 2 … 12 − 2Free
  7. 7−3 table (part 1)3 − 3 … 8 − 3 (answers 0 to 5)Free
  8. 8−3 table (part 2)9 − 3 … 13 − 3 (answers 6 to 10)Free
  9. 9Review of the −3 table3 − 3 … 13 − 3Free
  10. 10Review −1 to −3Tables −1 to −3 mixedFree
  11. 11−4 table (part 1)4 − 4 … 9 − 4 (answers 0 to 5)Free
  12. 12−4 table (part 2)10 − 4 … 14 − 4 (answers 6 to 10)
  13. 13Review of the −4 table4 − 4 … 14 − 4
  14. 14Review −1 to −4Tables −1 to −4 mixed
  15. 15−5 table (part 1)5 − 5 … 10 − 5 (answers 0 to 5)
  16. 16−5 table (part 2)11 − 5 … 15 − 5 (answers 6 to 10)
  17. 17Review of the −5 table5 − 5 … 15 − 5
  18. 18Review −1 to −5Tables −1 to −5 mixed
  19. 19−6 table (part 1)6 − 6 … 11 − 6 (answers 0 to 5)
  20. 20−6 table (part 2)12 − 6 … 16 − 6 (answers 6 to 10)
  21. 21Review of the −6 table6 − 6 … 16 − 6
  22. 22Review −1 to −6Tables −1 to −6 mixed
  23. 23−7 table (part 1)7 − 7 … 12 − 7 (answers 0 to 5)
  24. 24−7 table (part 2)13 − 7 … 17 − 7 (answers 6 to 10)
  25. 25Review of the −7 table7 − 7 … 17 − 7
  26. 26Review −1 to −7Tables −1 to −7 mixed
  27. 27−8 table (part 1)8 − 8 … 13 − 8 (answers 0 to 5)
  28. 28−8 table (part 2)14 − 8 … 18 − 8 (answers 6 to 10)
  29. 29Review of the −8 table8 − 8 … 18 − 8
  30. 30Review −1 to −8Tables −1 to −8 mixed
  31. 31−9 table (part 1)9 − 9 … 14 − 9 (answers 0 to 5)
  32. 32−9 table (part 2)15 − 9 … 19 − 9 (answers 6 to 10)
  33. 33Review of the −9 table9 − 9 … 19 − 9
  34. 34Review −1 to −9Tables −1 to −9 mixed
  35. 35−10 table (part 1)10 − 10 … 15 − 10 (answers 0 to 5)
  36. 36−10 table (part 2)16 − 10 … 20 − 10 (answers 6 to 10)
  37. 37Review of the −10 table10 − 10 … 20 − 10
  38. 38Review −1 to −10Tables −1 to −10 mixed

Within a session, the subtractions of a step are drawn at random, without repetition until all have been seen. You can also combine several steps in one session from the selection screen: the app then mixes their content.

Stars are earned on the number of correct answers per minute: 1 star from 14, 2 from 20, 3 from 28.

Steps marked “Free” are available without a subscription, with no time or session limit.