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Mental Subtraction Worksheet for Class 2 and 3

Mental maths lesson 7: Subtract 2-digit numbers left to right · Set 835 · 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. 1.57 − 15 =
  2. 2.59 − 21 =
  3. 3.73 − 48 =
  4. 4.56 − 17 =
  5. 5.68 − 53 =
  6. 6.90 − 81 =
  7. 7.65 − 34 =
  8. 8.69 − 55 =
  9. 9.67 − 35 =
  10. 10.79 − 63 =
  11. 11.54 − 21 =
  12. 12.83 − 28 =
  13. 13.95 − 31 =
  14. 14.65 − 51 =
  15. 15.79 − 66 =
  16. 16.87 − 23 =
  17. 17.57 − 34 =
  18. 18.61 − 37 =
  19. 19.69 − 48 =
  20. 20.81 − 33 =
  21. 21.78 − 32 =
  22. 22.83 − 19 =
  23. 23.68 − 58 =
  24. 24.69 − 32 =
  25. 25.63 − 22 =
  26. 26.88 − 19 =
  27. 27.85 − 25 =
  28. 28.93 − 21 =
  29. 29.91 − 66 =
  30. 30.53 − 22 =
  31. 31.74 − 52 =
  32. 32.86 − 39 =
  33. 33.96 − 68 =
  34. 34.56 − 18 =
  35. 35.58 − 31 =
  36. 36.75 − 23 =
  37. 37.86 − 57 =
  38. 38.90 − 59 =
  39. 39.87 − 18 =
  40. 40.52 − 15 =

Answer key

  1. 42
  2. 38
  3. 25
  4. 39
  5. 15
  6. 9
  7. 31
  8. 14
  9. 32
  10. 16
  11. 33
  12. 55
  13. 64
  14. 14
  15. 13
  16. 64
  17. 23
  18. 24
  19. 21
  20. 48
  21. 46
  22. 64
  23. 10
  24. 37
  25. 41
  26. 69
  27. 60
  28. 72
  29. 25
  30. 31
  31. 22
  32. 47
  33. 28
  34. 38
  35. 27
  36. 52
  37. 29
  38. 31
  39. 69
  40. 37

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