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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 65 · 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. 1.13 + 17 + 74 + 37 =
  2. 2.17 + 83 + 16 + 42 =
  3. 3.50 + 23 + 55 + 17 =
  4. 4.40 + 75 + 12 + 61 =
  5. 5.27 + 34 + 19 + 11 =
  6. 6.18 + 19 + 21 + 37 =
  7. 7.42 + 71 + 56 + 64 =
  8. 8.80 + 77 + 43 + 69 =
  9. 9.63 + 64 + 17 + 63 =
  10. 10.47 + 14 + 72 + 43 =
  11. 11.15 + 31 + 25 + 50 =
  12. 12.43 + 82 + 48 + 80 =
  13. 13.55 + 29 + 17 + 30 =
  14. 14.68 + 17 + 20 + 44 =
  15. 15.77 + 44 + 75 + 51 =
  16. 16.42 + 37 + 12 + 68 =
  17. 17.79 + 14 + 88 + 34 =
  18. 18.79 + 31 + 79 + 58 =
  19. 19.73 + 48 + 49 + 46 =
  20. 20.44 + 77 + 12 + 22 =
  21. 21.86 + 89 + 70 + 42 =
  22. 22.13 + 23 + 27 + 73 =
  23. 23.88 + 29 + 14 + 65 =
  24. 24.83 + 65 + 53 + 19 =
  25. 25.16 + 34 + 81 + 60 =
  26. 26.73 + 45 + 54 + 40 =
  27. 27.69 + 15 + 55 + 14 =
  28. 28.66 + 66 + 27 + 57 =
  29. 29.51 + 70 + 50 + 81 =
  30. 30.48 + 20 + 64 + 59 =
  31. 31.39 + 17 + 42 + 44 =
  32. 32.45 + 33 + 13 + 29 =
  33. 33.32 + 12 + 21 + 55 =
  34. 34.52 + 36 + 85 + 49 =
  35. 35.59 + 26 + 68 + 83 =
  36. 36.28 + 78 + 36 + 65 =
  37. 37.20 + 13 + 23 + 29 =
  38. 38.15 + 66 + 16 + 37 =
  39. 39.39 + 30 + 74 + 58 =
  40. 40.29 + 56 + 18 + 16 =

Answer key

  1. 141
  2. 158
  3. 145
  4. 188
  5. 91
  6. 95
  7. 233
  8. 269
  9. 207
  10. 176
  11. 121
  12. 253
  13. 131
  14. 149
  15. 247
  16. 159
  17. 215
  18. 247
  19. 216
  20. 155
  21. 287
  22. 136
  23. 196
  24. 220
  25. 191
  26. 212
  27. 153
  28. 216
  29. 252
  30. 191
  31. 142
  32. 120
  33. 120
  34. 222
  35. 236
  36. 207
  37. 85
  38. 134
  39. 201
  40. 119

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