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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 244 · 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. 1.43 + 12 + 80 + 47 =
  2. 2.86 + 82 + 54 + 69 =
  3. 3.73 + 14 + 46 + 64 =
  4. 4.56 + 61 + 74 + 70 =
  5. 5.44 + 62 + 26 + 19 =
  6. 6.49 + 34 + 44 + 89 =
  7. 7.46 + 46 + 40 + 76 =
  8. 8.15 + 24 + 41 + 14 =
  9. 9.26 + 51 + 41 + 31 =
  10. 10.55 + 30 + 13 + 46 =
  11. 11.24 + 54 + 75 + 87 =
  12. 12.83 + 87 + 65 + 28 =
  13. 13.17 + 62 + 37 + 15 =
  14. 14.57 + 76 + 51 + 24 =
  15. 15.66 + 44 + 54 + 58 =
  16. 16.81 + 64 + 69 + 20 =
  17. 17.69 + 32 + 87 + 27 =
  18. 18.86 + 39 + 38 + 59 =
  19. 19.41 + 19 + 56 + 52 =
  20. 20.20 + 64 + 21 + 76 =
  21. 21.37 + 27 + 51 + 89 =
  22. 22.75 + 81 + 28 + 51 =
  23. 23.77 + 16 + 64 + 28 =
  24. 24.16 + 45 + 40 + 68 =
  25. 25.59 + 51 + 52 + 39 =
  26. 26.47 + 75 + 17 + 23 =
  27. 27.52 + 50 + 76 + 39 =
  28. 28.68 + 30 + 49 + 79 =
  29. 29.27 + 71 + 29 + 79 =
  30. 30.78 + 67 + 37 + 75 =
  31. 31.71 + 67 + 76 + 28 =
  32. 32.41 + 48 + 58 + 63 =
  33. 33.83 + 88 + 54 + 37 =
  34. 34.22 + 27 + 12 + 52 =
  35. 35.40 + 23 + 80 + 69 =
  36. 36.82 + 20 + 89 + 21 =
  37. 37.42 + 38 + 25 + 68 =
  38. 38.86 + 81 + 64 + 80 =
  39. 39.46 + 38 + 57 + 89 =
  40. 40.15 + 34 + 14 + 46 =

Answer key

  1. 182
  2. 291
  3. 197
  4. 261
  5. 151
  6. 216
  7. 208
  8. 94
  9. 149
  10. 144
  11. 240
  12. 263
  13. 131
  14. 208
  15. 222
  16. 234
  17. 215
  18. 222
  19. 168
  20. 181
  21. 204
  22. 235
  23. 185
  24. 169
  25. 201
  26. 162
  27. 217
  28. 226
  29. 206
  30. 257
  31. 242
  32. 210
  33. 262
  34. 113
  35. 212
  36. 212
  37. 173
  38. 311
  39. 230
  40. 109

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