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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 11 · 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. 1.70 + 68 + 35 + 54 =
  2. 2.31 + 47 + 67 + 69 =
  3. 3.19 + 77 + 39 + 62 =
  4. 4.13 + 74 + 12 + 11 =
  5. 5.47 + 45 + 32 + 80 =
  6. 6.61 + 19 + 27 + 26 =
  7. 7.59 + 70 + 36 + 58 =
  8. 8.60 + 29 + 37 + 74 =
  9. 9.20 + 20 + 79 + 73 =
  10. 10.54 + 39 + 52 + 78 =
  11. 11.11 + 83 + 28 + 30 =
  12. 12.40 + 52 + 30 + 72 =
  13. 13.17 + 15 + 73 + 88 =
  14. 14.88 + 76 + 75 + 35 =
  15. 15.89 + 28 + 59 + 32 =
  16. 16.14 + 18 + 47 + 26 =
  17. 17.81 + 60 + 26 + 68 =
  18. 18.32 + 60 + 73 + 57 =
  19. 19.35 + 39 + 66 + 85 =
  20. 20.24 + 39 + 40 + 14 =
  21. 21.30 + 76 + 26 + 11 =
  22. 22.72 + 24 + 68 + 32 =
  23. 23.46 + 53 + 26 + 40 =
  24. 24.72 + 76 + 23 + 29 =
  25. 25.57 + 29 + 68 + 54 =
  26. 26.62 + 60 + 25 + 58 =
  27. 27.85 + 22 + 22 + 49 =
  28. 28.15 + 58 + 71 + 24 =
  29. 29.13 + 54 + 32 + 41 =
  30. 30.51 + 24 + 46 + 54 =
  31. 31.28 + 82 + 26 + 52 =
  32. 32.58 + 73 + 29 + 45 =
  33. 33.25 + 45 + 43 + 85 =
  34. 34.78 + 83 + 27 + 86 =
  35. 35.87 + 89 + 19 + 23 =
  36. 36.48 + 15 + 82 + 49 =
  37. 37.70 + 19 + 72 + 57 =
  38. 38.46 + 31 + 51 + 33 =
  39. 39.75 + 16 + 19 + 32 =
  40. 40.50 + 25 + 31 + 85 =

Answer key

  1. 227
  2. 214
  3. 197
  4. 110
  5. 204
  6. 133
  7. 223
  8. 200
  9. 192
  10. 223
  11. 152
  12. 194
  13. 193
  14. 274
  15. 208
  16. 105
  17. 235
  18. 222
  19. 225
  20. 117
  21. 143
  22. 196
  23. 165
  24. 200
  25. 208
  26. 205
  27. 178
  28. 168
  29. 140
  30. 175
  31. 188
  32. 205
  33. 198
  34. 274
  35. 218
  36. 194
  37. 218
  38. 161
  39. 142
  40. 191

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