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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 54 · 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. 1.30 + 29 + 34 + 22 =
  2. 2.45 + 32 + 50 + 87 =
  3. 3.24 + 56 + 26 + 15 =
  4. 4.58 + 15 + 69 + 20 =
  5. 5.87 + 66 + 55 + 18 =
  6. 6.18 + 79 + 36 + 69 =
  7. 7.53 + 84 + 18 + 36 =
  8. 8.83 + 47 + 88 + 71 =
  9. 9.11 + 14 + 61 + 59 =
  10. 10.79 + 27 + 30 + 66 =
  11. 11.56 + 79 + 63 + 61 =
  12. 12.22 + 53 + 20 + 82 =
  13. 13.65 + 56 + 44 + 19 =
  14. 14.48 + 30 + 58 + 77 =
  15. 15.15 + 38 + 25 + 34 =
  16. 16.47 + 75 + 79 + 86 =
  17. 17.37 + 68 + 30 + 65 =
  18. 18.47 + 29 + 56 + 67 =
  19. 19.28 + 27 + 67 + 55 =
  20. 20.13 + 11 + 39 + 35 =
  21. 21.44 + 18 + 55 + 73 =
  22. 22.72 + 17 + 83 + 40 =
  23. 23.69 + 52 + 34 + 34 =
  24. 24.67 + 47 + 16 + 38 =
  25. 25.46 + 66 + 68 + 33 =
  26. 26.39 + 53 + 11 + 84 =
  27. 27.79 + 54 + 58 + 82 =
  28. 28.30 + 38 + 41 + 54 =
  29. 29.67 + 58 + 21 + 85 =
  30. 30.20 + 82 + 24 + 12 =
  31. 31.61 + 38 + 13 + 73 =
  32. 32.28 + 35 + 48 + 15 =
  33. 33.62 + 11 + 53 + 23 =
  34. 34.39 + 39 + 74 + 11 =
  35. 35.21 + 21 + 21 + 57 =
  36. 36.55 + 26 + 55 + 34 =
  37. 37.52 + 16 + 51 + 59 =
  38. 38.28 + 88 + 57 + 21 =
  39. 39.79 + 57 + 89 + 22 =
  40. 40.56 + 43 + 19 + 81 =

Answer key

  1. 115
  2. 214
  3. 121
  4. 162
  5. 226
  6. 202
  7. 191
  8. 289
  9. 145
  10. 202
  11. 259
  12. 177
  13. 184
  14. 213
  15. 112
  16. 287
  17. 200
  18. 199
  19. 177
  20. 98
  21. 190
  22. 212
  23. 189
  24. 168
  25. 213
  26. 187
  27. 273
  28. 163
  29. 231
  30. 138
  31. 185
  32. 126
  33. 149
  34. 163
  35. 120
  36. 170
  37. 178
  38. 194
  39. 247
  40. 199

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