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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 74 · 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. 1.58 + 66 + 56 + 33 =
  2. 2.44 + 60 + 68 + 81 =
  3. 3.43 + 59 + 62 + 27 =
  4. 4.17 + 21 + 33 + 84 =
  5. 5.64 + 57 + 79 + 14 =
  6. 6.78 + 62 + 79 + 48 =
  7. 7.53 + 67 + 12 + 66 =
  8. 8.83 + 80 + 56 + 60 =
  9. 9.31 + 47 + 63 + 54 =
  10. 10.19 + 40 + 17 + 26 =
  11. 11.30 + 48 + 35 + 81 =
  12. 12.31 + 44 + 41 + 84 =
  13. 13.69 + 34 + 31 + 17 =
  14. 14.30 + 85 + 23 + 75 =
  15. 15.85 + 21 + 53 + 86 =
  16. 16.58 + 63 + 53 + 85 =
  17. 17.47 + 31 + 60 + 44 =
  18. 18.13 + 21 + 64 + 58 =
  19. 19.38 + 17 + 80 + 74 =
  20. 20.72 + 47 + 25 + 32 =
  21. 21.15 + 63 + 32 + 88 =
  22. 22.89 + 46 + 87 + 77 =
  23. 23.58 + 46 + 21 + 27 =
  24. 24.61 + 37 + 42 + 68 =
  25. 25.72 + 65 + 83 + 19 =
  26. 26.68 + 81 + 41 + 52 =
  27. 27.23 + 54 + 89 + 17 =
  28. 28.63 + 82 + 34 + 20 =
  29. 29.59 + 41 + 33 + 36 =
  30. 30.51 + 63 + 26 + 46 =
  31. 31.55 + 55 + 83 + 62 =
  32. 32.54 + 70 + 81 + 60 =
  33. 33.73 + 76 + 71 + 72 =
  34. 34.85 + 41 + 76 + 34 =
  35. 35.64 + 41 + 17 + 28 =
  36. 36.32 + 53 + 82 + 79 =
  37. 37.19 + 27 + 82 + 23 =
  38. 38.82 + 44 + 38 + 27 =
  39. 39.67 + 26 + 50 + 12 =
  40. 40.61 + 89 + 55 + 22 =

Answer key

  1. 213
  2. 253
  3. 191
  4. 155
  5. 214
  6. 267
  7. 198
  8. 279
  9. 195
  10. 102
  11. 194
  12. 200
  13. 151
  14. 213
  15. 245
  16. 259
  17. 182
  18. 156
  19. 209
  20. 176
  21. 198
  22. 299
  23. 152
  24. 208
  25. 239
  26. 242
  27. 183
  28. 199
  29. 169
  30. 186
  31. 255
  32. 265
  33. 292
  34. 236
  35. 150
  36. 246
  37. 151
  38. 191
  39. 155
  40. 227

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