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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 826 · 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. 1.24 + 44 + 45 + 19 =
  2. 2.87 + 30 + 55 + 13 =
  3. 3.24 + 77 + 84 + 19 =
  4. 4.17 + 87 + 27 + 83 =
  5. 5.72 + 80 + 78 + 47 =
  6. 6.80 + 79 + 43 + 14 =
  7. 7.48 + 15 + 88 + 18 =
  8. 8.70 + 19 + 64 + 48 =
  9. 9.78 + 28 + 88 + 13 =
  10. 10.36 + 17 + 30 + 73 =
  11. 11.18 + 71 + 50 + 16 =
  12. 12.67 + 27 + 41 + 35 =
  13. 13.56 + 66 + 75 + 87 =
  14. 14.22 + 61 + 77 + 84 =
  15. 15.14 + 81 + 50 + 39 =
  16. 16.28 + 44 + 12 + 45 =
  17. 17.57 + 17 + 25 + 89 =
  18. 18.20 + 54 + 62 + 76 =
  19. 19.66 + 86 + 32 + 39 =
  20. 20.28 + 85 + 11 + 75 =
  21. 21.24 + 33 + 48 + 44 =
  22. 22.28 + 74 + 26 + 64 =
  23. 23.40 + 39 + 80 + 86 =
  24. 24.41 + 32 + 82 + 44 =
  25. 25.78 + 82 + 37 + 78 =
  26. 26.38 + 80 + 35 + 89 =
  27. 27.31 + 20 + 14 + 17 =
  28. 28.69 + 81 + 73 + 27 =
  29. 29.18 + 81 + 38 + 78 =
  30. 30.50 + 20 + 62 + 58 =
  31. 31.74 + 51 + 76 + 36 =
  32. 32.48 + 83 + 33 + 77 =
  33. 33.50 + 29 + 78 + 47 =
  34. 34.25 + 60 + 20 + 34 =
  35. 35.64 + 76 + 80 + 55 =
  36. 36.60 + 57 + 50 + 79 =
  37. 37.22 + 20 + 18 + 17 =
  38. 38.79 + 18 + 12 + 88 =
  39. 39.77 + 31 + 34 + 19 =
  40. 40.13 + 76 + 60 + 44 =

Answer key

  1. 132
  2. 185
  3. 204
  4. 214
  5. 277
  6. 216
  7. 169
  8. 201
  9. 207
  10. 156
  11. 155
  12. 170
  13. 284
  14. 244
  15. 184
  16. 129
  17. 188
  18. 212
  19. 223
  20. 199
  21. 149
  22. 192
  23. 245
  24. 199
  25. 275
  26. 242
  27. 82
  28. 250
  29. 215
  30. 190
  31. 237
  32. 241
  33. 204
  34. 139
  35. 275
  36. 246
  37. 77
  38. 197
  39. 161
  40. 193

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