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Mental Subtraction Worksheet for Class 2 and 3

Mental maths lesson 7: Subtract 2-digit numbers left to right · Set 817 · 40 questions
TalentJR

How to do it in your head (Tens first): Keep the first number as it is. Take away the tens of the second number. Take away the ones (bridge back through a ten if you need to).

NameDateTime takenScore ___ / 40
  1. 1.69 − 21 =
  2. 2.86 − 31 =
  3. 3.58 − 12 =
  4. 4.92 − 16 =
  5. 5.98 − 51 =
  6. 6.53 − 24 =
  7. 7.58 − 43 =
  8. 8.57 − 13 =
  9. 9.78 − 62 =
  10. 10.62 − 37 =
  11. 11.88 − 61 =
  12. 12.57 − 24 =
  13. 13.56 − 44 =
  14. 14.75 − 36 =
  15. 15.91 − 55 =
  16. 16.62 − 23 =
  17. 17.86 − 32 =
  18. 18.72 − 28 =
  19. 19.96 − 69 =
  20. 20.55 − 41 =
  21. 21.75 − 25 =
  22. 22.73 − 23 =
  23. 23.53 − 38 =
  24. 24.73 − 51 =
  25. 25.98 − 17 =
  26. 26.81 − 63 =
  27. 27.82 − 29 =
  28. 28.84 − 32 =
  29. 29.86 − 73 =
  30. 30.63 − 21 =
  31. 31.87 − 16 =
  32. 32.76 − 45 =
  33. 33.73 − 61 =
  34. 34.59 − 45 =
  35. 35.96 − 78 =
  36. 36.99 − 57 =
  37. 37.62 − 27 =
  38. 38.87 − 75 =
  39. 39.96 − 16 =
  40. 40.64 − 31 =

Answer key

  1. 48
  2. 55
  3. 46
  4. 76
  5. 47
  6. 29
  7. 15
  8. 44
  9. 16
  10. 25
  11. 27
  12. 33
  13. 12
  14. 39
  15. 36
  16. 39
  17. 54
  18. 44
  19. 27
  20. 14
  21. 50
  22. 50
  23. 15
  24. 22
  25. 81
  26. 18
  27. 53
  28. 52
  29. 13
  30. 42
  31. 71
  32. 31
  33. 12
  34. 14
  35. 18
  36. 42
  37. 35
  38. 12
  39. 80
  40. 33

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