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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 796 · 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 + 47 + 76 + 67 =
  2. 2.73 + 52 + 59 + 51 =
  3. 3.58 + 74 + 48 + 34 =
  4. 4.45 + 73 + 11 + 73 =
  5. 5.35 + 14 + 70 + 18 =
  6. 6.26 + 59 + 86 + 45 =
  7. 7.69 + 71 + 43 + 19 =
  8. 8.34 + 12 + 28 + 49 =
  9. 9.71 + 28 + 61 + 79 =
  10. 10.82 + 70 + 16 + 78 =
  11. 11.26 + 34 + 11 + 83 =
  12. 12.19 + 80 + 79 + 60 =
  13. 13.27 + 22 + 61 + 24 =
  14. 14.48 + 40 + 18 + 35 =
  15. 15.27 + 17 + 22 + 15 =
  16. 16.27 + 75 + 20 + 30 =
  17. 17.89 + 24 + 65 + 21 =
  18. 18.51 + 59 + 77 + 63 =
  19. 19.14 + 33 + 76 + 32 =
  20. 20.16 + 64 + 36 + 30 =
  21. 21.60 + 47 + 69 + 73 =
  22. 22.22 + 84 + 21 + 38 =
  23. 23.24 + 47 + 68 + 12 =
  24. 24.32 + 59 + 81 + 30 =
  25. 25.11 + 63 + 73 + 47 =
  26. 26.16 + 11 + 57 + 11 =
  27. 27.16 + 61 + 56 + 31 =
  28. 28.47 + 77 + 76 + 63 =
  29. 29.88 + 32 + 88 + 86 =
  30. 30.19 + 69 + 82 + 49 =
  31. 31.80 + 59 + 68 + 89 =
  32. 32.16 + 67 + 69 + 59 =
  33. 33.68 + 89 + 57 + 40 =
  34. 34.53 + 34 + 71 + 18 =
  35. 35.26 + 25 + 80 + 16 =
  36. 36.32 + 47 + 64 + 16 =
  37. 37.18 + 60 + 49 + 51 =
  38. 38.39 + 82 + 55 + 28 =
  39. 39.76 + 44 + 29 + 22 =
  40. 40.14 + 69 + 43 + 57 =

Answer key

  1. 241
  2. 235
  3. 214
  4. 202
  5. 137
  6. 216
  7. 202
  8. 123
  9. 239
  10. 246
  11. 154
  12. 238
  13. 134
  14. 141
  15. 81
  16. 152
  17. 199
  18. 250
  19. 155
  20. 146
  21. 249
  22. 165
  23. 151
  24. 202
  25. 194
  26. 95
  27. 164
  28. 263
  29. 294
  30. 219
  31. 296
  32. 211
  33. 254
  34. 176
  35. 147
  36. 159
  37. 178
  38. 204
  39. 171
  40. 183

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