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Mental Subtraction Worksheet for Class 2 and 3

Mental maths lesson 7: Subtract 2-digit numbers left to right · Set 343 · 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. 1.61 − 51 =
  2. 2.61 − 38 =
  3. 3.86 − 18 =
  4. 4.52 − 31 =
  5. 5.91 − 26 =
  6. 6.75 − 34 =
  7. 7.63 − 38 =
  8. 8.90 − 81 =
  9. 9.57 − 35 =
  10. 10.66 − 17 =
  11. 11.79 − 38 =
  12. 12.63 − 42 =
  13. 13.92 − 69 =
  14. 14.63 − 51 =
  15. 15.56 − 17 =
  16. 16.98 − 61 =
  17. 17.73 − 58 =
  18. 18.92 − 36 =
  19. 19.91 − 21 =
  20. 20.67 − 18 =
  21. 21.74 − 53 =
  22. 22.94 − 79 =
  23. 23.82 − 31 =
  24. 24.93 − 63 =
  25. 25.61 − 18 =
  26. 26.96 − 73 =
  27. 27.90 − 63 =
  28. 28.57 − 27 =
  29. 29.84 − 17 =
  30. 30.62 − 31 =
  31. 31.96 − 62 =
  32. 32.77 − 21 =
  33. 33.84 − 73 =
  34. 34.80 − 33 =
  35. 35.75 − 19 =
  36. 36.84 − 41 =
  37. 37.54 − 37 =
  38. 38.84 − 37 =
  39. 39.58 − 32 =
  40. 40.89 − 53 =

Answer key

  1. 10
  2. 23
  3. 68
  4. 21
  5. 65
  6. 41
  7. 25
  8. 9
  9. 22
  10. 49
  11. 41
  12. 21
  13. 23
  14. 12
  15. 39
  16. 37
  17. 15
  18. 56
  19. 70
  20. 49
  21. 21
  22. 15
  23. 51
  24. 30
  25. 43
  26. 23
  27. 27
  28. 30
  29. 67
  30. 31
  31. 34
  32. 56
  33. 11
  34. 47
  35. 56
  36. 43
  37. 17
  38. 47
  39. 26
  40. 36

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