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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 182 · 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. 1.22 + 41 + 33 + 41 =
  2. 2.13 + 65 + 88 + 44 =
  3. 3.46 + 51 + 86 + 49 =
  4. 4.73 + 71 + 50 + 33 =
  5. 5.64 + 33 + 20 + 87 =
  6. 6.40 + 34 + 33 + 16 =
  7. 7.19 + 38 + 56 + 59 =
  8. 8.22 + 37 + 82 + 56 =
  9. 9.27 + 16 + 55 + 25 =
  10. 10.82 + 46 + 50 + 89 =
  11. 11.75 + 66 + 38 + 26 =
  12. 12.87 + 67 + 39 + 61 =
  13. 13.43 + 18 + 59 + 53 =
  14. 14.83 + 89 + 84 + 42 =
  15. 15.71 + 69 + 85 + 50 =
  16. 16.78 + 75 + 12 + 67 =
  17. 17.80 + 73 + 50 + 52 =
  18. 18.67 + 55 + 72 + 39 =
  19. 19.66 + 11 + 33 + 54 =
  20. 20.31 + 55 + 30 + 77 =
  21. 21.63 + 44 + 47 + 19 =
  22. 22.22 + 22 + 55 + 76 =
  23. 23.30 + 78 + 30 + 60 =
  24. 24.13 + 72 + 55 + 13 =
  25. 25.38 + 69 + 60 + 63 =
  26. 26.48 + 11 + 52 + 19 =
  27. 27.84 + 27 + 81 + 36 =
  28. 28.71 + 82 + 21 + 18 =
  29. 29.22 + 27 + 36 + 24 =
  30. 30.39 + 45 + 28 + 46 =
  31. 31.89 + 69 + 68 + 59 =
  32. 32.15 + 84 + 34 + 21 =
  33. 33.75 + 20 + 37 + 19 =
  34. 34.23 + 50 + 79 + 67 =
  35. 35.58 + 80 + 71 + 38 =
  36. 36.11 + 22 + 35 + 66 =
  37. 37.26 + 40 + 41 + 25 =
  38. 38.82 + 87 + 42 + 14 =
  39. 39.77 + 77 + 86 + 88 =
  40. 40.51 + 66 + 59 + 30 =

Answer key

  1. 137
  2. 210
  3. 232
  4. 227
  5. 204
  6. 123
  7. 172
  8. 197
  9. 123
  10. 267
  11. 205
  12. 254
  13. 173
  14. 298
  15. 275
  16. 232
  17. 255
  18. 233
  19. 164
  20. 193
  21. 173
  22. 175
  23. 198
  24. 153
  25. 230
  26. 130
  27. 228
  28. 192
  29. 109
  30. 158
  31. 285
  32. 154
  33. 151
  34. 219
  35. 247
  36. 134
  37. 132
  38. 225
  39. 328
  40. 206

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