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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 164 · 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. 1.27 + 73 + 69 + 76 =
  2. 2.77 + 29 + 31 + 41 =
  3. 3.18 + 80 + 84 + 31 =
  4. 4.14 + 15 + 28 + 16 =
  5. 5.57 + 14 + 50 + 32 =
  6. 6.54 + 11 + 28 + 86 =
  7. 7.66 + 67 + 74 + 26 =
  8. 8.25 + 50 + 53 + 69 =
  9. 9.31 + 59 + 58 + 20 =
  10. 10.63 + 23 + 36 + 89 =
  11. 11.55 + 68 + 46 + 14 =
  12. 12.80 + 82 + 52 + 31 =
  13. 13.60 + 22 + 11 + 82 =
  14. 14.41 + 73 + 65 + 86 =
  15. 15.68 + 21 + 32 + 28 =
  16. 16.20 + 66 + 80 + 38 =
  17. 17.45 + 25 + 43 + 14 =
  18. 18.33 + 43 + 17 + 18 =
  19. 19.24 + 79 + 27 + 84 =
  20. 20.73 + 73 + 55 + 55 =
  21. 21.63 + 72 + 82 + 58 =
  22. 22.83 + 21 + 68 + 40 =
  23. 23.12 + 35 + 55 + 32 =
  24. 24.51 + 66 + 59 + 11 =
  25. 25.88 + 38 + 57 + 30 =
  26. 26.58 + 74 + 25 + 58 =
  27. 27.68 + 18 + 19 + 27 =
  28. 28.37 + 32 + 55 + 26 =
  29. 29.33 + 45 + 72 + 32 =
  30. 30.35 + 42 + 52 + 69 =
  31. 31.87 + 15 + 81 + 87 =
  32. 32.43 + 89 + 41 + 26 =
  33. 33.66 + 30 + 68 + 79 =
  34. 34.23 + 47 + 34 + 64 =
  35. 35.47 + 79 + 15 + 26 =
  36. 36.76 + 23 + 76 + 13 =
  37. 37.76 + 55 + 23 + 34 =
  38. 38.37 + 69 + 25 + 20 =
  39. 39.42 + 83 + 14 + 31 =
  40. 40.83 + 73 + 52 + 51 =

Answer key

  1. 245
  2. 178
  3. 213
  4. 73
  5. 153
  6. 179
  7. 233
  8. 197
  9. 168
  10. 211
  11. 183
  12. 245
  13. 175
  14. 265
  15. 149
  16. 204
  17. 127
  18. 111
  19. 214
  20. 256
  21. 275
  22. 212
  23. 134
  24. 187
  25. 213
  26. 215
  27. 132
  28. 150
  29. 182
  30. 198
  31. 270
  32. 199
  33. 243
  34. 168
  35. 167
  36. 188
  37. 188
  38. 151
  39. 170
  40. 259

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