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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 595 · 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. 1.54 + 74 + 82 + 18 =
  2. 2.89 + 26 + 15 + 49 =
  3. 3.82 + 16 + 47 + 19 =
  4. 4.41 + 25 + 47 + 32 =
  5. 5.14 + 42 + 19 + 23 =
  6. 6.11 + 12 + 42 + 11 =
  7. 7.37 + 45 + 59 + 19 =
  8. 8.27 + 52 + 51 + 75 =
  9. 9.85 + 32 + 51 + 45 =
  10. 10.46 + 75 + 37 + 29 =
  11. 11.52 + 26 + 33 + 89 =
  12. 12.65 + 16 + 14 + 81 =
  13. 13.26 + 31 + 34 + 17 =
  14. 14.17 + 83 + 51 + 34 =
  15. 15.22 + 58 + 12 + 24 =
  16. 16.77 + 70 + 76 + 76 =
  17. 17.69 + 16 + 32 + 25 =
  18. 18.42 + 56 + 47 + 33 =
  19. 19.68 + 60 + 59 + 85 =
  20. 20.40 + 28 + 56 + 67 =
  21. 21.45 + 29 + 77 + 81 =
  22. 22.52 + 48 + 81 + 89 =
  23. 23.42 + 80 + 54 + 87 =
  24. 24.67 + 80 + 51 + 56 =
  25. 25.53 + 75 + 25 + 72 =
  26. 26.74 + 32 + 15 + 51 =
  27. 27.71 + 25 + 38 + 31 =
  28. 28.48 + 31 + 85 + 47 =
  29. 29.64 + 65 + 64 + 27 =
  30. 30.35 + 68 + 65 + 22 =
  31. 31.59 + 45 + 37 + 63 =
  32. 32.84 + 11 + 50 + 28 =
  33. 33.84 + 28 + 45 + 73 =
  34. 34.62 + 47 + 31 + 48 =
  35. 35.83 + 89 + 86 + 58 =
  36. 36.18 + 33 + 68 + 64 =
  37. 37.25 + 52 + 82 + 84 =
  38. 38.87 + 49 + 55 + 13 =
  39. 39.50 + 69 + 84 + 63 =
  40. 40.33 + 85 + 26 + 52 =

Answer key

  1. 228
  2. 179
  3. 164
  4. 145
  5. 98
  6. 76
  7. 160
  8. 205
  9. 213
  10. 187
  11. 200
  12. 176
  13. 108
  14. 185
  15. 116
  16. 299
  17. 142
  18. 178
  19. 272
  20. 191
  21. 232
  22. 270
  23. 263
  24. 254
  25. 225
  26. 172
  27. 165
  28. 211
  29. 220
  30. 190
  31. 204
  32. 173
  33. 230
  34. 188
  35. 316
  36. 183
  37. 243
  38. 204
  39. 266
  40. 196

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