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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 609 · 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. 1.49 + 14 + 84 + 78 =
  2. 2.53 + 89 + 75 + 80 =
  3. 3.48 + 23 + 52 + 36 =
  4. 4.11 + 81 + 82 + 46 =
  5. 5.73 + 70 + 37 + 44 =
  6. 6.66 + 41 + 50 + 16 =
  7. 7.35 + 53 + 11 + 46 =
  8. 8.56 + 68 + 65 + 44 =
  9. 9.53 + 69 + 76 + 57 =
  10. 10.44 + 85 + 24 + 41 =
  11. 11.38 + 31 + 28 + 30 =
  12. 12.74 + 54 + 33 + 25 =
  13. 13.20 + 65 + 20 + 28 =
  14. 14.64 + 43 + 12 + 56 =
  15. 15.40 + 42 + 13 + 24 =
  16. 16.17 + 82 + 60 + 80 =
  17. 17.53 + 70 + 16 + 85 =
  18. 18.15 + 12 + 35 + 18 =
  19. 19.25 + 17 + 56 + 81 =
  20. 20.18 + 82 + 59 + 39 =
  21. 21.74 + 32 + 14 + 13 =
  22. 22.54 + 24 + 56 + 32 =
  23. 23.28 + 24 + 49 + 78 =
  24. 24.16 + 51 + 41 + 87 =
  25. 25.52 + 47 + 15 + 23 =
  26. 26.23 + 26 + 71 + 44 =
  27. 27.33 + 48 + 24 + 31 =
  28. 28.68 + 32 + 53 + 23 =
  29. 29.29 + 20 + 81 + 23 =
  30. 30.39 + 75 + 25 + 19 =
  31. 31.48 + 14 + 16 + 88 =
  32. 32.57 + 28 + 81 + 70 =
  33. 33.86 + 42 + 70 + 16 =
  34. 34.47 + 82 + 27 + 64 =
  35. 35.64 + 72 + 66 + 15 =
  36. 36.11 + 43 + 71 + 21 =
  37. 37.31 + 89 + 27 + 33 =
  38. 38.61 + 46 + 67 + 56 =
  39. 39.20 + 80 + 69 + 87 =
  40. 40.54 + 17 + 63 + 33 =

Answer key

  1. 225
  2. 297
  3. 159
  4. 220
  5. 224
  6. 173
  7. 145
  8. 233
  9. 255
  10. 194
  11. 127
  12. 186
  13. 133
  14. 175
  15. 119
  16. 239
  17. 224
  18. 80
  19. 179
  20. 198
  21. 133
  22. 166
  23. 179
  24. 195
  25. 137
  26. 164
  27. 136
  28. 176
  29. 153
  30. 158
  31. 166
  32. 236
  33. 214
  34. 220
  35. 217
  36. 146
  37. 180
  38. 230
  39. 256
  40. 167

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