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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 467 · 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. 1.11 + 13 + 67 + 64 =
  2. 2.86 + 60 + 82 + 31 =
  3. 3.32 + 24 + 38 + 62 =
  4. 4.59 + 11 + 32 + 45 =
  5. 5.64 + 37 + 54 + 45 =
  6. 6.75 + 22 + 79 + 53 =
  7. 7.35 + 19 + 89 + 21 =
  8. 8.21 + 64 + 81 + 13 =
  9. 9.15 + 23 + 77 + 85 =
  10. 10.61 + 16 + 24 + 74 =
  11. 11.56 + 85 + 47 + 19 =
  12. 12.33 + 14 + 68 + 26 =
  13. 13.26 + 80 + 23 + 21 =
  14. 14.63 + 66 + 59 + 71 =
  15. 15.32 + 75 + 71 + 38 =
  16. 16.18 + 34 + 33 + 82 =
  17. 17.20 + 81 + 28 + 13 =
  18. 18.73 + 86 + 51 + 51 =
  19. 19.55 + 20 + 65 + 33 =
  20. 20.21 + 82 + 52 + 34 =
  21. 21.51 + 48 + 70 + 36 =
  22. 22.66 + 26 + 40 + 80 =
  23. 23.27 + 28 + 14 + 74 =
  24. 24.65 + 40 + 78 + 36 =
  25. 25.79 + 71 + 14 + 43 =
  26. 26.16 + 88 + 72 + 24 =
  27. 27.44 + 57 + 49 + 48 =
  28. 28.55 + 83 + 77 + 78 =
  29. 29.12 + 26 + 24 + 50 =
  30. 30.63 + 14 + 31 + 55 =
  31. 31.27 + 88 + 54 + 34 =
  32. 32.43 + 26 + 88 + 80 =
  33. 33.22 + 47 + 62 + 15 =
  34. 34.34 + 28 + 83 + 14 =
  35. 35.34 + 43 + 80 + 60 =
  36. 36.75 + 29 + 22 + 31 =
  37. 37.30 + 20 + 66 + 59 =
  38. 38.17 + 28 + 63 + 21 =
  39. 39.69 + 82 + 26 + 47 =
  40. 40.88 + 57 + 87 + 69 =

Answer key

  1. 155
  2. 259
  3. 156
  4. 147
  5. 200
  6. 229
  7. 164
  8. 179
  9. 200
  10. 175
  11. 207
  12. 141
  13. 150
  14. 259
  15. 216
  16. 167
  17. 142
  18. 261
  19. 173
  20. 189
  21. 205
  22. 212
  23. 143
  24. 219
  25. 207
  26. 200
  27. 198
  28. 293
  29. 112
  30. 163
  31. 203
  32. 237
  33. 146
  34. 159
  35. 217
  36. 157
  37. 175
  38. 129
  39. 224
  40. 301

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