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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 950 · 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. 1.48 + 57 + 38 + 16 =
  2. 2.70 + 13 + 82 + 62 =
  3. 3.22 + 50 + 20 + 48 =
  4. 4.81 + 75 + 78 + 74 =
  5. 5.73 + 47 + 29 + 82 =
  6. 6.73 + 15 + 27 + 16 =
  7. 7.32 + 57 + 39 + 76 =
  8. 8.12 + 32 + 87 + 88 =
  9. 9.15 + 89 + 36 + 47 =
  10. 10.13 + 22 + 66 + 41 =
  11. 11.59 + 28 + 36 + 80 =
  12. 12.49 + 68 + 23 + 59 =
  13. 13.41 + 66 + 37 + 31 =
  14. 14.20 + 53 + 26 + 20 =
  15. 15.85 + 67 + 88 + 25 =
  16. 16.85 + 47 + 41 + 47 =
  17. 17.14 + 37 + 78 + 49 =
  18. 18.62 + 87 + 62 + 38 =
  19. 19.37 + 89 + 60 + 86 =
  20. 20.15 + 24 + 46 + 54 =
  21. 21.24 + 54 + 24 + 21 =
  22. 22.30 + 46 + 75 + 16 =
  23. 23.30 + 13 + 38 + 88 =
  24. 24.85 + 72 + 83 + 53 =
  25. 25.13 + 21 + 52 + 57 =
  26. 26.64 + 76 + 81 + 68 =
  27. 27.37 + 56 + 18 + 56 =
  28. 28.44 + 11 + 25 + 78 =
  29. 29.35 + 20 + 18 + 82 =
  30. 30.45 + 52 + 52 + 53 =
  31. 31.37 + 57 + 59 + 69 =
  32. 32.88 + 23 + 50 + 27 =
  33. 33.24 + 48 + 57 + 34 =
  34. 34.22 + 27 + 24 + 79 =
  35. 35.68 + 38 + 71 + 41 =
  36. 36.54 + 88 + 81 + 43 =
  37. 37.15 + 13 + 19 + 60 =
  38. 38.63 + 21 + 17 + 31 =
  39. 39.47 + 75 + 85 + 43 =
  40. 40.81 + 76 + 22 + 70 =

Answer key

  1. 159
  2. 227
  3. 140
  4. 308
  5. 231
  6. 131
  7. 204
  8. 219
  9. 187
  10. 142
  11. 203
  12. 199
  13. 175
  14. 119
  15. 265
  16. 220
  17. 178
  18. 249
  19. 272
  20. 139
  21. 123
  22. 167
  23. 169
  24. 293
  25. 143
  26. 289
  27. 167
  28. 158
  29. 155
  30. 202
  31. 222
  32. 188
  33. 163
  34. 152
  35. 218
  36. 266
  37. 107
  38. 132
  39. 250
  40. 249

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