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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 371 · 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. 1.83 + 84 + 46 + 24 =
  2. 2.16 + 68 + 68 + 45 =
  3. 3.31 + 33 + 48 + 81 =
  4. 4.65 + 87 + 43 + 84 =
  5. 5.84 + 34 + 33 + 43 =
  6. 6.17 + 33 + 89 + 22 =
  7. 7.44 + 33 + 72 + 42 =
  8. 8.27 + 23 + 81 + 40 =
  9. 9.24 + 28 + 82 + 60 =
  10. 10.65 + 77 + 28 + 77 =
  11. 11.74 + 56 + 40 + 42 =
  12. 12.67 + 55 + 48 + 13 =
  13. 13.84 + 72 + 30 + 46 =
  14. 14.35 + 11 + 30 + 84 =
  15. 15.82 + 50 + 59 + 74 =
  16. 16.19 + 22 + 44 + 84 =
  17. 17.56 + 76 + 40 + 22 =
  18. 18.88 + 58 + 31 + 84 =
  19. 19.58 + 73 + 83 + 11 =
  20. 20.36 + 14 + 59 + 31 =
  21. 21.11 + 31 + 13 + 86 =
  22. 22.81 + 75 + 35 + 26 =
  23. 23.29 + 79 + 22 + 79 =
  24. 24.68 + 21 + 65 + 64 =
  25. 25.58 + 59 + 39 + 17 =
  26. 26.41 + 19 + 21 + 13 =
  27. 27.26 + 31 + 62 + 56 =
  28. 28.40 + 76 + 70 + 17 =
  29. 29.38 + 32 + 70 + 74 =
  30. 30.28 + 27 + 30 + 46 =
  31. 31.85 + 56 + 14 + 83 =
  32. 32.35 + 89 + 60 + 14 =
  33. 33.46 + 40 + 88 + 72 =
  34. 34.44 + 26 + 46 + 12 =
  35. 35.73 + 28 + 87 + 54 =
  36. 36.53 + 17 + 46 + 63 =
  37. 37.27 + 81 + 21 + 89 =
  38. 38.54 + 58 + 58 + 66 =
  39. 39.11 + 16 + 57 + 79 =
  40. 40.37 + 88 + 19 + 24 =

Answer key

  1. 237
  2. 197
  3. 193
  4. 279
  5. 194
  6. 161
  7. 191
  8. 171
  9. 194
  10. 247
  11. 212
  12. 183
  13. 232
  14. 160
  15. 265
  16. 169
  17. 194
  18. 261
  19. 225
  20. 140
  21. 141
  22. 217
  23. 209
  24. 218
  25. 173
  26. 94
  27. 175
  28. 203
  29. 214
  30. 131
  31. 238
  32. 198
  33. 246
  34. 128
  35. 242
  36. 179
  37. 218
  38. 236
  39. 163
  40. 168

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