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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 755 · 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. 1.31 + 86 + 44 + 27 =
  2. 2.62 + 20 + 22 + 32 =
  3. 3.23 + 45 + 48 + 28 =
  4. 4.25 + 64 + 51 + 54 =
  5. 5.79 + 89 + 82 + 49 =
  6. 6.86 + 79 + 83 + 60 =
  7. 7.49 + 72 + 77 + 14 =
  8. 8.58 + 32 + 11 + 27 =
  9. 9.68 + 36 + 26 + 35 =
  10. 10.31 + 42 + 37 + 24 =
  11. 11.46 + 24 + 59 + 21 =
  12. 12.77 + 45 + 56 + 64 =
  13. 13.44 + 65 + 22 + 54 =
  14. 14.43 + 86 + 36 + 44 =
  15. 15.72 + 53 + 43 + 81 =
  16. 16.64 + 33 + 27 + 70 =
  17. 17.51 + 57 + 75 + 47 =
  18. 18.66 + 48 + 33 + 34 =
  19. 19.47 + 85 + 53 + 63 =
  20. 20.58 + 41 + 38 + 29 =
  21. 21.39 + 80 + 17 + 25 =
  22. 22.58 + 38 + 30 + 89 =
  23. 23.30 + 85 + 35 + 17 =
  24. 24.38 + 63 + 71 + 76 =
  25. 25.11 + 34 + 23 + 36 =
  26. 26.33 + 51 + 82 + 59 =
  27. 27.83 + 41 + 80 + 39 =
  28. 28.66 + 84 + 31 + 16 =
  29. 29.57 + 13 + 33 + 73 =
  30. 30.61 + 27 + 20 + 48 =
  31. 31.86 + 87 + 26 + 86 =
  32. 32.26 + 35 + 72 + 29 =
  33. 33.34 + 54 + 26 + 43 =
  34. 34.31 + 43 + 88 + 82 =
  35. 35.45 + 27 + 78 + 26 =
  36. 36.86 + 50 + 77 + 33 =
  37. 37.21 + 26 + 73 + 14 =
  38. 38.32 + 26 + 64 + 32 =
  39. 39.34 + 77 + 55 + 59 =
  40. 40.30 + 76 + 39 + 45 =

Answer key

  1. 188
  2. 136
  3. 144
  4. 194
  5. 299
  6. 308
  7. 212
  8. 128
  9. 165
  10. 134
  11. 150
  12. 242
  13. 185
  14. 209
  15. 249
  16. 194
  17. 230
  18. 181
  19. 248
  20. 166
  21. 161
  22. 215
  23. 167
  24. 248
  25. 104
  26. 225
  27. 243
  28. 197
  29. 176
  30. 156
  31. 285
  32. 162
  33. 157
  34. 244
  35. 176
  36. 246
  37. 134
  38. 154
  39. 225
  40. 190

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