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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 103 · 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. 1.53 + 25 + 54 + 66 =
  2. 2.74 + 20 + 61 + 49 =
  3. 3.17 + 38 + 12 + 33 =
  4. 4.42 + 42 + 59 + 60 =
  5. 5.62 + 59 + 16 + 83 =
  6. 6.60 + 89 + 55 + 37 =
  7. 7.72 + 47 + 60 + 20 =
  8. 8.61 + 25 + 88 + 14 =
  9. 9.77 + 14 + 32 + 50 =
  10. 10.81 + 43 + 49 + 32 =
  11. 11.88 + 25 + 35 + 82 =
  12. 12.16 + 39 + 79 + 70 =
  13. 13.21 + 19 + 31 + 54 =
  14. 14.56 + 85 + 81 + 16 =
  15. 15.88 + 48 + 25 + 24 =
  16. 16.57 + 44 + 18 + 86 =
  17. 17.29 + 19 + 54 + 79 =
  18. 18.18 + 80 + 63 + 47 =
  19. 19.53 + 74 + 21 + 18 =
  20. 20.51 + 39 + 24 + 18 =
  21. 21.65 + 53 + 38 + 38 =
  22. 22.40 + 12 + 28 + 64 =
  23. 23.40 + 36 + 48 + 30 =
  24. 24.55 + 47 + 55 + 23 =
  25. 25.35 + 71 + 80 + 35 =
  26. 26.54 + 30 + 35 + 39 =
  27. 27.85 + 89 + 27 + 22 =
  28. 28.89 + 60 + 44 + 67 =
  29. 29.62 + 82 + 84 + 73 =
  30. 30.85 + 58 + 16 + 29 =
  31. 31.29 + 32 + 71 + 73 =
  32. 32.12 + 42 + 89 + 75 =
  33. 33.65 + 55 + 82 + 27 =
  34. 34.18 + 30 + 12 + 55 =
  35. 35.80 + 60 + 59 + 74 =
  36. 36.87 + 11 + 24 + 68 =
  37. 37.73 + 17 + 26 + 33 =
  38. 38.73 + 27 + 42 + 19 =
  39. 39.53 + 80 + 24 + 20 =
  40. 40.26 + 23 + 72 + 31 =

Answer key

  1. 198
  2. 204
  3. 100
  4. 203
  5. 220
  6. 241
  7. 199
  8. 188
  9. 173
  10. 205
  11. 230
  12. 204
  13. 125
  14. 238
  15. 185
  16. 205
  17. 181
  18. 208
  19. 166
  20. 132
  21. 194
  22. 144
  23. 154
  24. 180
  25. 221
  26. 158
  27. 223
  28. 260
  29. 301
  30. 188
  31. 205
  32. 218
  33. 229
  34. 115
  35. 273
  36. 190
  37. 149
  38. 161
  39. 177
  40. 152

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