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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 218 · 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. 1.16 + 82 + 63 + 72 =
  2. 2.81 + 23 + 79 + 76 =
  3. 3.33 + 14 + 31 + 26 =
  4. 4.23 + 41 + 17 + 35 =
  5. 5.16 + 70 + 50 + 74 =
  6. 6.73 + 45 + 88 + 46 =
  7. 7.15 + 38 + 80 + 29 =
  8. 8.85 + 83 + 52 + 12 =
  9. 9.29 + 37 + 28 + 84 =
  10. 10.59 + 75 + 14 + 25 =
  11. 11.15 + 39 + 27 + 81 =
  12. 12.15 + 65 + 35 + 33 =
  13. 13.70 + 28 + 51 + 83 =
  14. 14.20 + 34 + 55 + 49 =
  15. 15.27 + 49 + 42 + 84 =
  16. 16.88 + 33 + 46 + 18 =
  17. 17.87 + 75 + 12 + 25 =
  18. 18.12 + 63 + 78 + 45 =
  19. 19.75 + 31 + 59 + 75 =
  20. 20.19 + 86 + 84 + 82 =
  21. 21.27 + 16 + 63 + 57 =
  22. 22.48 + 13 + 16 + 78 =
  23. 23.44 + 31 + 24 + 76 =
  24. 24.84 + 41 + 70 + 34 =
  25. 25.82 + 64 + 34 + 23 =
  26. 26.42 + 13 + 35 + 86 =
  27. 27.50 + 36 + 76 + 15 =
  28. 28.74 + 82 + 56 + 18 =
  29. 29.29 + 35 + 39 + 26 =
  30. 30.49 + 45 + 31 + 13 =
  31. 31.25 + 21 + 37 + 71 =
  32. 32.76 + 82 + 36 + 62 =
  33. 33.32 + 53 + 18 + 51 =
  34. 34.38 + 21 + 31 + 13 =
  35. 35.33 + 39 + 61 + 14 =
  36. 36.30 + 45 + 77 + 42 =
  37. 37.21 + 49 + 43 + 17 =
  38. 38.64 + 82 + 20 + 19 =
  39. 39.54 + 21 + 47 + 49 =
  40. 40.62 + 57 + 60 + 81 =

Answer key

  1. 233
  2. 259
  3. 104
  4. 116
  5. 210
  6. 252
  7. 162
  8. 232
  9. 178
  10. 173
  11. 162
  12. 148
  13. 232
  14. 158
  15. 202
  16. 185
  17. 199
  18. 198
  19. 240
  20. 271
  21. 163
  22. 155
  23. 175
  24. 229
  25. 203
  26. 176
  27. 177
  28. 230
  29. 129
  30. 138
  31. 154
  32. 256
  33. 154
  34. 103
  35. 147
  36. 194
  37. 130
  38. 185
  39. 171
  40. 260

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