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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 694 · 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. 1.88 + 38 + 74 + 57 =
  2. 2.17 + 82 + 29 + 50 =
  3. 3.49 + 29 + 12 + 14 =
  4. 4.13 + 87 + 83 + 47 =
  5. 5.39 + 23 + 62 + 15 =
  6. 6.72 + 18 + 45 + 85 =
  7. 7.65 + 18 + 15 + 64 =
  8. 8.12 + 50 + 45 + 25 =
  9. 9.11 + 60 + 67 + 55 =
  10. 10.78 + 15 + 19 + 17 =
  11. 11.13 + 85 + 26 + 42 =
  12. 12.38 + 63 + 16 + 52 =
  13. 13.64 + 35 + 59 + 85 =
  14. 14.87 + 13 + 15 + 79 =
  15. 15.27 + 21 + 22 + 78 =
  16. 16.31 + 49 + 77 + 29 =
  17. 17.39 + 67 + 12 + 24 =
  18. 18.39 + 55 + 48 + 24 =
  19. 19.48 + 20 + 15 + 30 =
  20. 20.20 + 58 + 48 + 47 =
  21. 21.61 + 46 + 29 + 89 =
  22. 22.75 + 44 + 87 + 25 =
  23. 23.14 + 31 + 76 + 36 =
  24. 24.70 + 16 + 67 + 51 =
  25. 25.28 + 73 + 81 + 52 =
  26. 26.17 + 64 + 70 + 33 =
  27. 27.61 + 23 + 78 + 64 =
  28. 28.83 + 83 + 20 + 58 =
  29. 29.48 + 64 + 17 + 20 =
  30. 30.15 + 21 + 77 + 23 =
  31. 31.57 + 21 + 40 + 61 =
  32. 32.49 + 32 + 51 + 14 =
  33. 33.54 + 69 + 11 + 61 =
  34. 34.81 + 56 + 82 + 80 =
  35. 35.78 + 55 + 82 + 58 =
  36. 36.17 + 59 + 57 + 39 =
  37. 37.37 + 48 + 88 + 67 =
  38. 38.20 + 42 + 35 + 70 =
  39. 39.68 + 62 + 41 + 73 =
  40. 40.52 + 34 + 28 + 71 =

Answer key

  1. 257
  2. 178
  3. 104
  4. 230
  5. 139
  6. 220
  7. 162
  8. 132
  9. 193
  10. 129
  11. 166
  12. 169
  13. 243
  14. 194
  15. 148
  16. 186
  17. 142
  18. 166
  19. 113
  20. 173
  21. 225
  22. 231
  23. 157
  24. 204
  25. 234
  26. 184
  27. 226
  28. 244
  29. 149
  30. 136
  31. 179
  32. 146
  33. 195
  34. 299
  35. 273
  36. 172
  37. 240
  38. 167
  39. 244
  40. 185

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