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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 129 · 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. 1.63 + 25 + 59 + 46 =
  2. 2.38 + 26 + 83 + 73 =
  3. 3.21 + 16 + 55 + 15 =
  4. 4.18 + 86 + 53 + 67 =
  5. 5.84 + 61 + 58 + 40 =
  6. 6.52 + 81 + 13 + 69 =
  7. 7.49 + 32 + 23 + 88 =
  8. 8.77 + 32 + 21 + 17 =
  9. 9.21 + 42 + 47 + 60 =
  10. 10.48 + 67 + 72 + 43 =
  11. 11.33 + 74 + 83 + 67 =
  12. 12.53 + 28 + 32 + 23 =
  13. 13.19 + 48 + 88 + 74 =
  14. 14.13 + 21 + 36 + 17 =
  15. 15.43 + 56 + 29 + 85 =
  16. 16.65 + 18 + 33 + 29 =
  17. 17.48 + 84 + 28 + 43 =
  18. 18.11 + 49 + 31 + 11 =
  19. 19.81 + 62 + 83 + 21 =
  20. 20.51 + 24 + 43 + 70 =
  21. 21.59 + 39 + 22 + 36 =
  22. 22.33 + 58 + 72 + 20 =
  23. 23.25 + 80 + 64 + 22 =
  24. 24.73 + 35 + 24 + 19 =
  25. 25.87 + 15 + 88 + 18 =
  26. 26.76 + 23 + 73 + 20 =
  27. 27.78 + 27 + 29 + 70 =
  28. 28.62 + 46 + 42 + 25 =
  29. 29.70 + 23 + 86 + 56 =
  30. 30.54 + 34 + 39 + 24 =
  31. 31.27 + 75 + 61 + 69 =
  32. 32.40 + 48 + 55 + 19 =
  33. 33.79 + 74 + 29 + 15 =
  34. 34.64 + 39 + 51 + 15 =
  35. 35.77 + 41 + 86 + 85 =
  36. 36.85 + 18 + 75 + 47 =
  37. 37.28 + 89 + 69 + 62 =
  38. 38.66 + 56 + 51 + 27 =
  39. 39.43 + 28 + 30 + 70 =
  40. 40.42 + 30 + 29 + 32 =

Answer key

  1. 193
  2. 220
  3. 107
  4. 224
  5. 243
  6. 215
  7. 192
  8. 147
  9. 170
  10. 230
  11. 257
  12. 136
  13. 229
  14. 87
  15. 213
  16. 145
  17. 203
  18. 102
  19. 247
  20. 188
  21. 156
  22. 183
  23. 191
  24. 151
  25. 208
  26. 192
  27. 204
  28. 175
  29. 235
  30. 151
  31. 232
  32. 162
  33. 197
  34. 169
  35. 289
  36. 225
  37. 248
  38. 200
  39. 171
  40. 133

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