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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 464 · 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. 1.24 + 14 + 40 + 31 =
  2. 2.28 + 77 + 30 + 52 =
  3. 3.73 + 80 + 48 + 16 =
  4. 4.59 + 81 + 28 + 84 =
  5. 5.16 + 52 + 76 + 68 =
  6. 6.31 + 44 + 74 + 23 =
  7. 7.35 + 37 + 70 + 18 =
  8. 8.82 + 13 + 23 + 55 =
  9. 9.16 + 71 + 59 + 65 =
  10. 10.13 + 35 + 44 + 80 =
  11. 11.68 + 11 + 73 + 21 =
  12. 12.19 + 76 + 66 + 38 =
  13. 13.13 + 51 + 28 + 74 =
  14. 14.88 + 85 + 32 + 25 =
  15. 15.21 + 71 + 89 + 64 =
  16. 16.28 + 33 + 86 + 16 =
  17. 17.50 + 25 + 57 + 60 =
  18. 18.33 + 38 + 26 + 73 =
  19. 19.54 + 47 + 14 + 64 =
  20. 20.73 + 29 + 79 + 11 =
  21. 21.46 + 75 + 22 + 45 =
  22. 22.66 + 48 + 29 + 63 =
  23. 23.47 + 88 + 86 + 21 =
  24. 24.79 + 85 + 26 + 21 =
  25. 25.32 + 89 + 40 + 69 =
  26. 26.14 + 25 + 54 + 37 =
  27. 27.57 + 44 + 69 + 34 =
  28. 28.71 + 73 + 59 + 46 =
  29. 29.59 + 13 + 88 + 27 =
  30. 30.54 + 15 + 86 + 66 =
  31. 31.67 + 18 + 40 + 25 =
  32. 32.81 + 74 + 65 + 11 =
  33. 33.34 + 79 + 17 + 89 =
  34. 34.76 + 86 + 26 + 38 =
  35. 35.38 + 19 + 19 + 75 =
  36. 36.47 + 72 + 17 + 74 =
  37. 37.63 + 43 + 12 + 63 =
  38. 38.85 + 77 + 59 + 68 =
  39. 39.38 + 55 + 60 + 14 =
  40. 40.36 + 56 + 79 + 20 =

Answer key

  1. 109
  2. 187
  3. 217
  4. 252
  5. 212
  6. 172
  7. 160
  8. 173
  9. 211
  10. 172
  11. 173
  12. 199
  13. 166
  14. 230
  15. 245
  16. 163
  17. 192
  18. 170
  19. 179
  20. 192
  21. 188
  22. 206
  23. 242
  24. 211
  25. 230
  26. 130
  27. 204
  28. 249
  29. 187
  30. 221
  31. 150
  32. 231
  33. 219
  34. 226
  35. 151
  36. 210
  37. 181
  38. 289
  39. 167
  40. 191

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