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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 822 · 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. 1.86 + 46 + 81 + 68 =
  2. 2.16 + 74 + 87 + 74 =
  3. 3.65 + 28 + 26 + 58 =
  4. 4.39 + 32 + 17 + 80 =
  5. 5.26 + 88 + 35 + 42 =
  6. 6.27 + 63 + 49 + 34 =
  7. 7.68 + 49 + 14 + 87 =
  8. 8.62 + 19 + 41 + 82 =
  9. 9.16 + 52 + 40 + 46 =
  10. 10.49 + 73 + 32 + 68 =
  11. 11.46 + 71 + 42 + 13 =
  12. 12.44 + 69 + 67 + 39 =
  13. 13.14 + 22 + 55 + 38 =
  14. 14.41 + 26 + 63 + 76 =
  15. 15.55 + 51 + 31 + 44 =
  16. 16.32 + 45 + 87 + 22 =
  17. 17.70 + 43 + 85 + 68 =
  18. 18.63 + 32 + 35 + 83 =
  19. 19.37 + 89 + 59 + 30 =
  20. 20.15 + 84 + 59 + 45 =
  21. 21.66 + 22 + 53 + 78 =
  22. 22.52 + 51 + 65 + 11 =
  23. 23.41 + 70 + 77 + 14 =
  24. 24.29 + 75 + 89 + 28 =
  25. 25.63 + 81 + 82 + 69 =
  26. 26.65 + 24 + 83 + 36 =
  27. 27.20 + 75 + 79 + 60 =
  28. 28.63 + 43 + 85 + 14 =
  29. 29.43 + 72 + 76 + 21 =
  30. 30.78 + 87 + 15 + 20 =
  31. 31.78 + 86 + 58 + 27 =
  32. 32.21 + 60 + 77 + 25 =
  33. 33.32 + 51 + 51 + 52 =
  34. 34.33 + 77 + 29 + 63 =
  35. 35.21 + 85 + 27 + 84 =
  36. 36.73 + 23 + 48 + 52 =
  37. 37.66 + 34 + 60 + 29 =
  38. 38.58 + 58 + 22 + 20 =
  39. 39.87 + 17 + 26 + 73 =
  40. 40.67 + 63 + 85 + 52 =

Answer key

  1. 281
  2. 251
  3. 177
  4. 168
  5. 191
  6. 173
  7. 218
  8. 204
  9. 154
  10. 222
  11. 172
  12. 219
  13. 129
  14. 206
  15. 181
  16. 186
  17. 266
  18. 213
  19. 215
  20. 203
  21. 219
  22. 179
  23. 202
  24. 221
  25. 295
  26. 208
  27. 234
  28. 205
  29. 212
  30. 200
  31. 249
  32. 183
  33. 186
  34. 202
  35. 217
  36. 196
  37. 189
  38. 158
  39. 203
  40. 267

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