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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 399 · 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. 1.84 + 11 + 32 + 27 =
  2. 2.17 + 20 + 26 + 23 =
  3. 3.18 + 40 + 37 + 58 =
  4. 4.63 + 73 + 21 + 65 =
  5. 5.19 + 49 + 59 + 19 =
  6. 6.63 + 61 + 20 + 70 =
  7. 7.14 + 26 + 63 + 86 =
  8. 8.67 + 20 + 86 + 14 =
  9. 9.19 + 43 + 69 + 72 =
  10. 10.75 + 30 + 12 + 86 =
  11. 11.23 + 84 + 63 + 19 =
  12. 12.40 + 67 + 26 + 49 =
  13. 13.80 + 14 + 46 + 22 =
  14. 14.70 + 83 + 17 + 69 =
  15. 15.46 + 57 + 47 + 69 =
  16. 16.11 + 53 + 54 + 61 =
  17. 17.62 + 63 + 24 + 62 =
  18. 18.75 + 34 + 81 + 28 =
  19. 19.71 + 32 + 43 + 73 =
  20. 20.41 + 87 + 45 + 59 =
  21. 21.71 + 83 + 73 + 82 =
  22. 22.62 + 66 + 25 + 11 =
  23. 23.25 + 88 + 39 + 86 =
  24. 24.85 + 15 + 47 + 75 =
  25. 25.65 + 45 + 44 + 19 =
  26. 26.73 + 69 + 51 + 41 =
  27. 27.78 + 61 + 13 + 48 =
  28. 28.49 + 12 + 80 + 64 =
  29. 29.39 + 83 + 37 + 58 =
  30. 30.22 + 15 + 63 + 15 =
  31. 31.50 + 26 + 63 + 31 =
  32. 32.52 + 81 + 64 + 75 =
  33. 33.25 + 43 + 15 + 51 =
  34. 34.30 + 65 + 62 + 61 =
  35. 35.24 + 75 + 26 + 86 =
  36. 36.63 + 66 + 88 + 14 =
  37. 37.11 + 73 + 37 + 28 =
  38. 38.48 + 55 + 30 + 82 =
  39. 39.77 + 40 + 86 + 28 =
  40. 40.86 + 13 + 78 + 23 =

Answer key

  1. 154
  2. 86
  3. 153
  4. 222
  5. 146
  6. 214
  7. 189
  8. 187
  9. 203
  10. 203
  11. 189
  12. 182
  13. 162
  14. 239
  15. 219
  16. 179
  17. 211
  18. 218
  19. 219
  20. 232
  21. 309
  22. 164
  23. 238
  24. 222
  25. 173
  26. 234
  27. 200
  28. 205
  29. 217
  30. 115
  31. 170
  32. 272
  33. 134
  34. 218
  35. 211
  36. 231
  37. 149
  38. 215
  39. 231
  40. 200

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