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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 111 · 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. 1.51 + 52 + 40 + 57 =
  2. 2.23 + 50 + 12 + 69 =
  3. 3.85 + 86 + 67 + 19 =
  4. 4.81 + 28 + 59 + 20 =
  5. 5.27 + 76 + 88 + 35 =
  6. 6.17 + 83 + 34 + 72 =
  7. 7.59 + 67 + 30 + 41 =
  8. 8.17 + 22 + 66 + 48 =
  9. 9.73 + 21 + 37 + 51 =
  10. 10.37 + 88 + 78 + 87 =
  11. 11.89 + 34 + 32 + 22 =
  12. 12.13 + 36 + 54 + 79 =
  13. 13.13 + 81 + 38 + 13 =
  14. 14.41 + 76 + 79 + 24 =
  15. 15.11 + 72 + 19 + 44 =
  16. 16.72 + 38 + 15 + 68 =
  17. 17.32 + 82 + 24 + 45 =
  18. 18.55 + 62 + 16 + 64 =
  19. 19.52 + 52 + 74 + 25 =
  20. 20.60 + 16 + 14 + 70 =
  21. 21.24 + 60 + 66 + 47 =
  22. 22.55 + 72 + 77 + 86 =
  23. 23.61 + 84 + 56 + 58 =
  24. 24.55 + 76 + 38 + 75 =
  25. 25.80 + 64 + 63 + 46 =
  26. 26.23 + 49 + 85 + 33 =
  27. 27.39 + 82 + 16 + 67 =
  28. 28.34 + 24 + 22 + 22 =
  29. 29.52 + 49 + 60 + 27 =
  30. 30.47 + 73 + 37 + 46 =
  31. 31.30 + 56 + 23 + 32 =
  32. 32.30 + 61 + 34 + 81 =
  33. 33.15 + 46 + 72 + 55 =
  34. 34.42 + 78 + 53 + 18 =
  35. 35.19 + 88 + 56 + 67 =
  36. 36.24 + 75 + 40 + 81 =
  37. 37.35 + 27 + 24 + 40 =
  38. 38.84 + 53 + 35 + 66 =
  39. 39.66 + 26 + 33 + 54 =
  40. 40.64 + 34 + 32 + 57 =

Answer key

  1. 200
  2. 154
  3. 257
  4. 188
  5. 226
  6. 206
  7. 197
  8. 153
  9. 182
  10. 290
  11. 177
  12. 182
  13. 145
  14. 220
  15. 146
  16. 193
  17. 183
  18. 197
  19. 203
  20. 160
  21. 197
  22. 290
  23. 259
  24. 244
  25. 253
  26. 190
  27. 204
  28. 102
  29. 188
  30. 203
  31. 141
  32. 206
  33. 188
  34. 191
  35. 230
  36. 220
  37. 126
  38. 238
  39. 179
  40. 187

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