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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 215 · 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. 1.17 + 39 + 11 + 25 =
  2. 2.57 + 46 + 51 + 34 =
  3. 3.72 + 73 + 25 + 68 =
  4. 4.36 + 83 + 66 + 71 =
  5. 5.76 + 75 + 21 + 16 =
  6. 6.17 + 12 + 76 + 72 =
  7. 7.76 + 15 + 40 + 89 =
  8. 8.30 + 73 + 77 + 55 =
  9. 9.86 + 68 + 66 + 24 =
  10. 10.56 + 84 + 41 + 17 =
  11. 11.61 + 82 + 12 + 21 =
  12. 12.48 + 57 + 60 + 86 =
  13. 13.55 + 46 + 75 + 81 =
  14. 14.86 + 84 + 33 + 53 =
  15. 15.39 + 57 + 61 + 51 =
  16. 16.69 + 75 + 25 + 49 =
  17. 17.62 + 25 + 51 + 46 =
  18. 18.16 + 39 + 52 + 72 =
  19. 19.49 + 80 + 55 + 24 =
  20. 20.83 + 30 + 74 + 59 =
  21. 21.68 + 54 + 59 + 12 =
  22. 22.87 + 11 + 17 + 78 =
  23. 23.30 + 40 + 38 + 22 =
  24. 24.12 + 67 + 81 + 78 =
  25. 25.28 + 20 + 25 + 30 =
  26. 26.78 + 49 + 49 + 85 =
  27. 27.64 + 57 + 22 + 86 =
  28. 28.40 + 21 + 35 + 68 =
  29. 29.78 + 37 + 26 + 50 =
  30. 30.87 + 75 + 21 + 53 =
  31. 31.57 + 19 + 15 + 33 =
  32. 32.16 + 24 + 73 + 22 =
  33. 33.71 + 39 + 69 + 68 =
  34. 34.35 + 24 + 17 + 55 =
  35. 35.68 + 26 + 88 + 19 =
  36. 36.16 + 14 + 52 + 58 =
  37. 37.14 + 34 + 22 + 48 =
  38. 38.80 + 58 + 76 + 54 =
  39. 39.31 + 27 + 61 + 43 =
  40. 40.39 + 61 + 22 + 80 =

Answer key

  1. 92
  2. 188
  3. 238
  4. 256
  5. 188
  6. 177
  7. 220
  8. 235
  9. 244
  10. 198
  11. 176
  12. 251
  13. 257
  14. 256
  15. 208
  16. 218
  17. 184
  18. 179
  19. 208
  20. 246
  21. 193
  22. 193
  23. 130
  24. 238
  25. 103
  26. 261
  27. 229
  28. 164
  29. 191
  30. 236
  31. 124
  32. 135
  33. 247
  34. 131
  35. 201
  36. 140
  37. 118
  38. 268
  39. 162
  40. 202

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