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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 907 · 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. 1.45 + 19 + 11 + 57 =
  2. 2.84 + 67 + 14 + 61 =
  3. 3.45 + 61 + 66 + 29 =
  4. 4.36 + 51 + 54 + 54 =
  5. 5.41 + 67 + 32 + 58 =
  6. 6.18 + 15 + 27 + 81 =
  7. 7.79 + 23 + 45 + 31 =
  8. 8.54 + 80 + 74 + 30 =
  9. 9.63 + 14 + 14 + 21 =
  10. 10.23 + 46 + 15 + 39 =
  11. 11.30 + 65 + 25 + 30 =
  12. 12.68 + 86 + 40 + 79 =
  13. 13.19 + 58 + 53 + 35 =
  14. 14.85 + 53 + 81 + 30 =
  15. 15.62 + 12 + 78 + 38 =
  16. 16.38 + 20 + 57 + 21 =
  17. 17.15 + 68 + 28 + 41 =
  18. 18.59 + 62 + 49 + 68 =
  19. 19.26 + 75 + 14 + 61 =
  20. 20.52 + 60 + 83 + 37 =
  21. 21.11 + 54 + 14 + 44 =
  22. 22.75 + 45 + 43 + 16 =
  23. 23.36 + 26 + 59 + 85 =
  24. 24.40 + 35 + 14 + 72 =
  25. 25.85 + 52 + 58 + 55 =
  26. 26.64 + 37 + 12 + 64 =
  27. 27.36 + 61 + 89 + 31 =
  28. 28.69 + 60 + 34 + 55 =
  29. 29.80 + 45 + 51 + 17 =
  30. 30.16 + 12 + 23 + 28 =
  31. 31.50 + 75 + 80 + 89 =
  32. 32.60 + 17 + 39 + 49 =
  33. 33.72 + 87 + 57 + 75 =
  34. 34.50 + 83 + 54 + 29 =
  35. 35.23 + 80 + 11 + 25 =
  36. 36.28 + 89 + 55 + 35 =
  37. 37.79 + 14 + 84 + 64 =
  38. 38.52 + 55 + 18 + 41 =
  39. 39.53 + 52 + 23 + 16 =
  40. 40.52 + 42 + 55 + 17 =

Answer key

  1. 132
  2. 226
  3. 201
  4. 195
  5. 198
  6. 141
  7. 178
  8. 238
  9. 112
  10. 123
  11. 150
  12. 273
  13. 165
  14. 249
  15. 190
  16. 136
  17. 152
  18. 238
  19. 176
  20. 232
  21. 123
  22. 179
  23. 206
  24. 161
  25. 250
  26. 177
  27. 217
  28. 218
  29. 193
  30. 79
  31. 294
  32. 165
  33. 291
  34. 216
  35. 139
  36. 207
  37. 241
  38. 166
  39. 144
  40. 166

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