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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 96 · 40 questions
TalentJR

The fast method (Keep a running total): Start with the first number. Add the tens of the next number, then its ones. Keep going until the list ends — only one total in your head at a time.

NameDateTime takenScore ___ / 40
  1. 1.50 + 43 + 60 + 31 =
  2. 2.11 + 40 + 37 + 54 =
  3. 3.51 + 46 + 27 + 45 =
  4. 4.62 + 17 + 45 + 80 =
  5. 5.28 + 78 + 45 + 16 =
  6. 6.66 + 22 + 12 + 28 =
  7. 7.54 + 24 + 35 + 50 =
  8. 8.20 + 54 + 48 + 14 =
  9. 9.89 + 84 + 87 + 54 =
  10. 10.47 + 78 + 50 + 86 =
  11. 11.25 + 21 + 57 + 39 =
  12. 12.23 + 69 + 32 + 82 =
  13. 13.56 + 28 + 19 + 14 =
  14. 14.86 + 60 + 43 + 17 =
  15. 15.15 + 11 + 75 + 38 =
  16. 16.17 + 51 + 52 + 85 =
  17. 17.81 + 20 + 56 + 27 =
  18. 18.45 + 22 + 18 + 19 =
  19. 19.54 + 72 + 38 + 72 =
  20. 20.88 + 13 + 65 + 76 =
  21. 21.71 + 13 + 77 + 27 =
  22. 22.12 + 57 + 76 + 23 =
  23. 23.21 + 32 + 50 + 87 =
  24. 24.31 + 46 + 35 + 53 =
  25. 25.34 + 40 + 77 + 60 =
  26. 26.48 + 50 + 24 + 11 =
  27. 27.22 + 43 + 85 + 46 =
  28. 28.17 + 19 + 74 + 27 =
  29. 29.41 + 33 + 22 + 25 =
  30. 30.48 + 51 + 63 + 78 =
  31. 31.66 + 85 + 81 + 24 =
  32. 32.62 + 17 + 12 + 76 =
  33. 33.25 + 62 + 89 + 53 =
  34. 34.74 + 85 + 84 + 15 =
  35. 35.65 + 74 + 15 + 51 =
  36. 36.78 + 75 + 88 + 36 =
  37. 37.64 + 81 + 69 + 11 =
  38. 38.40 + 21 + 67 + 50 =
  39. 39.87 + 77 + 11 + 57 =
  40. 40.28 + 84 + 80 + 74 =

Answer key

  1. 184
  2. 142
  3. 169
  4. 204
  5. 167
  6. 128
  7. 163
  8. 136
  9. 314
  10. 261
  11. 142
  12. 206
  13. 117
  14. 206
  15. 139
  16. 205
  17. 184
  18. 104
  19. 236
  20. 242
  21. 188
  22. 168
  23. 190
  24. 165
  25. 211
  26. 133
  27. 196
  28. 137
  29. 121
  30. 240
  31. 256
  32. 167
  33. 229
  34. 258
  35. 205
  36. 277
  37. 225
  38. 178
  39. 232
  40. 266

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