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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 956 · 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. 1.70 + 69 + 70 + 45 =
  2. 2.67 + 75 + 27 + 32 =
  3. 3.22 + 42 + 13 + 51 =
  4. 4.34 + 62 + 88 + 15 =
  5. 5.89 + 12 + 57 + 48 =
  6. 6.31 + 85 + 78 + 72 =
  7. 7.32 + 56 + 61 + 30 =
  8. 8.74 + 87 + 72 + 80 =
  9. 9.54 + 33 + 26 + 18 =
  10. 10.18 + 88 + 39 + 55 =
  11. 11.69 + 19 + 54 + 66 =
  12. 12.75 + 45 + 24 + 55 =
  13. 13.18 + 64 + 27 + 12 =
  14. 14.19 + 27 + 75 + 41 =
  15. 15.72 + 28 + 43 + 30 =
  16. 16.24 + 74 + 30 + 33 =
  17. 17.32 + 41 + 53 + 84 =
  18. 18.68 + 69 + 20 + 43 =
  19. 19.31 + 89 + 74 + 25 =
  20. 20.63 + 61 + 48 + 37 =
  21. 21.59 + 64 + 72 + 47 =
  22. 22.52 + 64 + 13 + 17 =
  23. 23.44 + 47 + 64 + 13 =
  24. 24.84 + 81 + 53 + 22 =
  25. 25.54 + 21 + 74 + 79 =
  26. 26.89 + 31 + 49 + 35 =
  27. 27.71 + 85 + 17 + 37 =
  28. 28.14 + 17 + 14 + 49 =
  29. 29.67 + 42 + 28 + 13 =
  30. 30.43 + 46 + 76 + 59 =
  31. 31.25 + 52 + 65 + 74 =
  32. 32.60 + 25 + 59 + 19 =
  33. 33.42 + 23 + 46 + 39 =
  34. 34.29 + 85 + 13 + 35 =
  35. 35.82 + 12 + 83 + 85 =
  36. 36.61 + 70 + 83 + 79 =
  37. 37.27 + 32 + 32 + 21 =
  38. 38.17 + 69 + 80 + 63 =
  39. 39.43 + 40 + 74 + 78 =
  40. 40.65 + 17 + 32 + 44 =

Answer key

  1. 254
  2. 201
  3. 128
  4. 199
  5. 206
  6. 266
  7. 179
  8. 313
  9. 131
  10. 200
  11. 208
  12. 199
  13. 121
  14. 162
  15. 173
  16. 161
  17. 210
  18. 200
  19. 219
  20. 209
  21. 242
  22. 146
  23. 168
  24. 240
  25. 228
  26. 204
  27. 210
  28. 94
  29. 150
  30. 224
  31. 216
  32. 163
  33. 150
  34. 162
  35. 262
  36. 293
  37. 112
  38. 229
  39. 235
  40. 158

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