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Explore · Mathematics

Addition & Subtraction

53 topics open, in the order they build on each other.

  1. Addition as combining or putting together two groupsages 4 to 6 · 17 questions
  2. Numbers up to 10 into pairsages 4 to 6 · 17 questions
  3. Number bonds to 10ages 4 to 6 · 17 questions
  4. Subtraction as taking away or separatingages 4 to 6 · 17 questions
  5. Representing Addition and Subtractionages 4 to 6 · 17 questions
  6. Addition and subtraction word problemsages 4 to 6 · 17 questions
  7. Fluent adding and subtracting within 5ages 5 to 6 · 18 questions
  8. Number bondsages 5 to 6 · 18 questions
  9. Adding and subtractingages 5 to 6 · 20 questions
  10. Early Word Problemsages 5 to 7 · 18 questions
  11. Addition and subtraction strategiesages 6 to 7 · 17 questions
  12. Addition in any orderages 6 to 7 · 14 questions
  13. Finding a missing number in additionages 6 to 7 · 18 questions
  14. Fluent adding and subtracting within 10ages 6 to 7 · 18 questions
  15. Addition and subtraction within 20ages 6 to 7 · 18 questions
  16. Grouping numbers to addages 6 to 7 · 17 questions
  17. Adding Three Small Numbersages 6 to 7 · 17 questions
  18. Inverse: addition undoes subtractionages 6 to 7 · 18 questions
  19. Fluent adding and subtracting within 20ages 7 to 8 · 18 questions
  20. Reading +, −, and = symbolsages 5 to 6 · 18 questions
  21. What the equals sign meansages 6 to 7 · 18 questions
  22. Unknown in Addition & Subtractionages 6 to 7 · 18 questions
  23. Subtracting multiples of 10ages 6 to 7 · 18 questions
  24. Adding within 100ages 6 to 7 · 17 questions
  25. Fluent addition and subtractionages 6 to 7 · 18 questions
  26. Mental addition and subtraction (age 6+)ages 6 to 7 · 18 questions
  27. Fluent adding and subtracting within 100ages 7 to 8 · 19 questions
  28. Adding several two-digit numbersages 7 to 8 · 11 questions
  29. Two-Step Word Problemsages 7 to 8 · 17 questions
  30. Adding and subtracting tens mentallyages 6 to 7 · 17 questions
  31. Adding and subtracting two two-digit numbersages 6 to 7 · 17 questions
  32. Mental and written addition and subtractionages 6 to 7 · 18 questions
  33. Addition and subtraction strategies (age 7+)ages 7 to 8 · 16 questions
  34. Addition and subtraction within 1000ages 7 to 8 · 17 questions
  35. Adding and subtracting (age 7+)ages 7 to 8 · 10 questions
  36. Mentally adding and subtracting ones with 3-digit numbersages 7 to 8 · 17 questions
  37. Missing number problems (age 7+)ages 7 to 8 · 17 questions
  38. Fluent adding and subtracting within 1000ages 8 to 9 · 16 questions
  39. Numbers on a number lineages 7 to 8 · 17 questions
  40. Mentally adding hundreds to 3-digit numbersages 7 to 8 · 17 questions
  41. Mentally adding tens to 3-digit numbersages 7 to 8 · 17 questions
  42. Adding and subtracting (age 8+)ages 8 to 9 · 18 questions
  43. Two-step addition and subtraction problemsages 8 to 9 · 18 questions
  44. Fluent addition and subtraction (age 9+)ages 9 to 10 · 17 questions
  45. Estimating by roundingages 7 to 9 · 12 questions
  46. Two-Step Equationsages 8 to 9 · 18 questions
  47. Mental addition and subtraction (age 9+)ages 9 to 10 · 17 questions
  48. Adding and subtracting (age 9+)ages 9 to 10 · 11 questions
  49. Checking Answers by Roundingages 9 to 10 · 17 questions
  50. Addition and subtraction strategies (age 10+)ages 10 to 11 · 17 questions
  51. Adding and subtracting (age 10+)ages 10 to 11 · 17 questions
  52. Positive and Negative Numbersages 11 to 13 · 14 questions
  53. Adding and Subtracting Negative Numbersages 12 to 13 · 14 questions
Addition & Subtraction · Mathematics · LightMySky