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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 153 · 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. 1.62 + 83 + 14 + 61 =
  2. 2.31 + 14 + 53 + 25 =
  3. 3.11 + 20 + 19 + 19 =
  4. 4.74 + 42 + 33 + 66 =
  5. 5.71 + 26 + 34 + 60 =
  6. 6.57 + 61 + 43 + 27 =
  7. 7.52 + 55 + 13 + 21 =
  8. 8.86 + 81 + 68 + 25 =
  9. 9.21 + 48 + 31 + 57 =
  10. 10.74 + 37 + 63 + 85 =
  11. 11.27 + 17 + 21 + 17 =
  12. 12.60 + 32 + 36 + 20 =
  13. 13.55 + 88 + 43 + 61 =
  14. 14.70 + 71 + 42 + 16 =
  15. 15.23 + 83 + 68 + 31 =
  16. 16.33 + 76 + 18 + 54 =
  17. 17.32 + 40 + 57 + 50 =
  18. 18.81 + 55 + 25 + 42 =
  19. 19.30 + 41 + 18 + 66 =
  20. 20.33 + 73 + 71 + 48 =
  21. 21.38 + 35 + 83 + 11 =
  22. 22.84 + 65 + 23 + 64 =
  23. 23.63 + 45 + 44 + 17 =
  24. 24.33 + 24 + 81 + 89 =
  25. 25.14 + 26 + 87 + 88 =
  26. 26.33 + 47 + 62 + 31 =
  27. 27.51 + 41 + 69 + 29 =
  28. 28.40 + 42 + 55 + 27 =
  29. 29.66 + 13 + 55 + 34 =
  30. 30.80 + 85 + 39 + 71 =
  31. 31.50 + 32 + 26 + 54 =
  32. 32.79 + 61 + 41 + 29 =
  33. 33.51 + 54 + 64 + 78 =
  34. 34.11 + 51 + 57 + 56 =
  35. 35.46 + 61 + 37 + 28 =
  36. 36.26 + 66 + 27 + 77 =
  37. 37.62 + 28 + 73 + 55 =
  38. 38.19 + 16 + 27 + 35 =
  39. 39.55 + 65 + 49 + 28 =
  40. 40.79 + 33 + 80 + 50 =

Answer key

  1. 220
  2. 123
  3. 69
  4. 215
  5. 191
  6. 188
  7. 141
  8. 260
  9. 157
  10. 259
  11. 82
  12. 148
  13. 247
  14. 199
  15. 205
  16. 181
  17. 179
  18. 203
  19. 155
  20. 225
  21. 167
  22. 236
  23. 169
  24. 227
  25. 215
  26. 173
  27. 190
  28. 164
  29. 168
  30. 275
  31. 162
  32. 210
  33. 247
  34. 175
  35. 172
  36. 196
  37. 218
  38. 97
  39. 197
  40. 242

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