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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 208 · 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. 1.75 + 17 + 81 + 13 =
  2. 2.64 + 56 + 25 + 43 =
  3. 3.44 + 74 + 36 + 11 =
  4. 4.42 + 57 + 63 + 86 =
  5. 5.68 + 81 + 37 + 86 =
  6. 6.71 + 25 + 86 + 70 =
  7. 7.52 + 32 + 32 + 89 =
  8. 8.53 + 78 + 37 + 28 =
  9. 9.71 + 45 + 18 + 13 =
  10. 10.70 + 34 + 71 + 43 =
  11. 11.19 + 48 + 19 + 52 =
  12. 12.81 + 82 + 69 + 49 =
  13. 13.11 + 34 + 24 + 55 =
  14. 14.76 + 20 + 22 + 53 =
  15. 15.38 + 53 + 85 + 68 =
  16. 16.41 + 78 + 84 + 72 =
  17. 17.16 + 62 + 57 + 61 =
  18. 18.49 + 58 + 21 + 39 =
  19. 19.57 + 67 + 78 + 29 =
  20. 20.54 + 66 + 20 + 73 =
  21. 21.85 + 37 + 36 + 83 =
  22. 22.72 + 73 + 40 + 19 =
  23. 23.19 + 71 + 68 + 46 =
  24. 24.17 + 86 + 26 + 75 =
  25. 25.43 + 60 + 17 + 58 =
  26. 26.18 + 23 + 67 + 11 =
  27. 27.24 + 14 + 64 + 11 =
  28. 28.18 + 17 + 35 + 89 =
  29. 29.13 + 41 + 29 + 67 =
  30. 30.88 + 66 + 33 + 27 =
  31. 31.54 + 50 + 31 + 68 =
  32. 32.68 + 87 + 51 + 87 =
  33. 33.79 + 89 + 80 + 43 =
  34. 34.53 + 61 + 67 + 36 =
  35. 35.82 + 13 + 68 + 47 =
  36. 36.33 + 37 + 72 + 47 =
  37. 37.51 + 85 + 17 + 30 =
  38. 38.69 + 54 + 18 + 58 =
  39. 39.29 + 81 + 44 + 13 =
  40. 40.44 + 58 + 22 + 64 =

Answer key

  1. 186
  2. 188
  3. 165
  4. 248
  5. 272
  6. 252
  7. 205
  8. 196
  9. 147
  10. 218
  11. 138
  12. 281
  13. 124
  14. 171
  15. 244
  16. 275
  17. 196
  18. 167
  19. 231
  20. 213
  21. 241
  22. 204
  23. 204
  24. 204
  25. 178
  26. 119
  27. 113
  28. 159
  29. 150
  30. 214
  31. 203
  32. 293
  33. 291
  34. 217
  35. 210
  36. 189
  37. 183
  38. 199
  39. 167
  40. 188

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