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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 286 · 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. 1.63 + 32 + 61 + 44 =
  2. 2.52 + 73 + 55 + 39 =
  3. 3.40 + 12 + 43 + 16 =
  4. 4.44 + 46 + 19 + 85 =
  5. 5.32 + 50 + 71 + 36 =
  6. 6.22 + 45 + 48 + 16 =
  7. 7.37 + 17 + 77 + 32 =
  8. 8.56 + 88 + 12 + 37 =
  9. 9.81 + 43 + 24 + 54 =
  10. 10.17 + 36 + 79 + 22 =
  11. 11.42 + 19 + 34 + 19 =
  12. 12.14 + 35 + 19 + 35 =
  13. 13.36 + 62 + 52 + 23 =
  14. 14.16 + 76 + 44 + 37 =
  15. 15.48 + 32 + 59 + 26 =
  16. 16.30 + 18 + 19 + 12 =
  17. 17.34 + 79 + 28 + 53 =
  18. 18.62 + 53 + 24 + 29 =
  19. 19.79 + 12 + 67 + 55 =
  20. 20.27 + 31 + 38 + 45 =
  21. 21.33 + 77 + 66 + 80 =
  22. 22.35 + 24 + 73 + 14 =
  23. 23.82 + 46 + 12 + 85 =
  24. 24.77 + 61 + 21 + 22 =
  25. 25.82 + 55 + 75 + 25 =
  26. 26.61 + 19 + 18 + 79 =
  27. 27.83 + 12 + 12 + 64 =
  28. 28.63 + 45 + 77 + 32 =
  29. 29.80 + 47 + 21 + 67 =
  30. 30.75 + 22 + 75 + 59 =
  31. 31.60 + 28 + 86 + 47 =
  32. 32.16 + 17 + 77 + 76 =
  33. 33.20 + 18 + 24 + 82 =
  34. 34.26 + 24 + 23 + 83 =
  35. 35.13 + 30 + 62 + 34 =
  36. 36.84 + 21 + 47 + 84 =
  37. 37.83 + 19 + 41 + 33 =
  38. 38.66 + 26 + 54 + 86 =
  39. 39.58 + 76 + 24 + 20 =
  40. 40.16 + 40 + 87 + 76 =

Answer key

  1. 200
  2. 219
  3. 111
  4. 194
  5. 189
  6. 131
  7. 163
  8. 193
  9. 202
  10. 154
  11. 114
  12. 103
  13. 173
  14. 173
  15. 165
  16. 79
  17. 194
  18. 168
  19. 213
  20. 141
  21. 256
  22. 146
  23. 225
  24. 181
  25. 237
  26. 177
  27. 171
  28. 217
  29. 215
  30. 231
  31. 221
  32. 186
  33. 144
  34. 156
  35. 139
  36. 236
  37. 176
  38. 232
  39. 178
  40. 219

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