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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 44 · 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. 1.14 + 23 + 43 + 35 =
  2. 2.87 + 43 + 81 + 82 =
  3. 3.36 + 26 + 32 + 46 =
  4. 4.76 + 33 + 32 + 57 =
  5. 5.29 + 20 + 48 + 45 =
  6. 6.26 + 66 + 31 + 89 =
  7. 7.70 + 42 + 13 + 62 =
  8. 8.12 + 81 + 24 + 15 =
  9. 9.24 + 12 + 32 + 35 =
  10. 10.47 + 32 + 82 + 85 =
  11. 11.15 + 25 + 31 + 29 =
  12. 12.23 + 84 + 31 + 25 =
  13. 13.24 + 14 + 88 + 70 =
  14. 14.50 + 83 + 38 + 42 =
  15. 15.70 + 29 + 59 + 19 =
  16. 16.40 + 15 + 86 + 68 =
  17. 17.22 + 58 + 72 + 87 =
  18. 18.85 + 36 + 57 + 30 =
  19. 19.17 + 51 + 11 + 13 =
  20. 20.25 + 38 + 23 + 31 =
  21. 21.78 + 17 + 76 + 25 =
  22. 22.30 + 79 + 18 + 30 =
  23. 23.22 + 24 + 37 + 11 =
  24. 24.41 + 18 + 66 + 40 =
  25. 25.33 + 12 + 79 + 36 =
  26. 26.50 + 85 + 82 + 89 =
  27. 27.14 + 70 + 16 + 43 =
  28. 28.53 + 16 + 49 + 15 =
  29. 29.39 + 28 + 78 + 55 =
  30. 30.53 + 54 + 73 + 20 =
  31. 31.20 + 13 + 31 + 41 =
  32. 32.84 + 64 + 49 + 69 =
  33. 33.20 + 22 + 54 + 61 =
  34. 34.13 + 84 + 27 + 89 =
  35. 35.74 + 36 + 67 + 65 =
  36. 36.83 + 83 + 33 + 33 =
  37. 37.51 + 36 + 21 + 32 =
  38. 38.16 + 16 + 29 + 75 =
  39. 39.33 + 56 + 86 + 84 =
  40. 40.66 + 21 + 53 + 26 =

Answer key

  1. 115
  2. 293
  3. 140
  4. 198
  5. 142
  6. 212
  7. 187
  8. 132
  9. 103
  10. 246
  11. 100
  12. 163
  13. 196
  14. 213
  15. 177
  16. 209
  17. 239
  18. 208
  19. 92
  20. 117
  21. 196
  22. 157
  23. 94
  24. 165
  25. 160
  26. 306
  27. 143
  28. 133
  29. 200
  30. 200
  31. 105
  32. 266
  33. 157
  34. 213
  35. 242
  36. 232
  37. 140
  38. 136
  39. 259
  40. 166

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