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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 869 · 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. 1.75 + 37 + 18 + 65 =
  2. 2.14 + 71 + 23 + 57 =
  3. 3.47 + 76 + 49 + 57 =
  4. 4.35 + 22 + 66 + 52 =
  5. 5.39 + 31 + 66 + 67 =
  6. 6.72 + 83 + 77 + 48 =
  7. 7.42 + 26 + 69 + 38 =
  8. 8.89 + 81 + 40 + 85 =
  9. 9.23 + 70 + 87 + 36 =
  10. 10.48 + 61 + 60 + 26 =
  11. 11.84 + 28 + 47 + 35 =
  12. 12.25 + 81 + 53 + 43 =
  13. 13.26 + 17 + 32 + 77 =
  14. 14.35 + 25 + 20 + 67 =
  15. 15.71 + 81 + 28 + 76 =
  16. 16.65 + 58 + 75 + 33 =
  17. 17.84 + 27 + 44 + 18 =
  18. 18.12 + 16 + 11 + 56 =
  19. 19.41 + 53 + 27 + 79 =
  20. 20.54 + 44 + 24 + 82 =
  21. 21.76 + 18 + 18 + 80 =
  22. 22.83 + 50 + 36 + 75 =
  23. 23.35 + 75 + 26 + 56 =
  24. 24.13 + 19 + 41 + 37 =
  25. 25.50 + 13 + 18 + 41 =
  26. 26.33 + 31 + 36 + 69 =
  27. 27.66 + 89 + 53 + 29 =
  28. 28.82 + 27 + 87 + 69 =
  29. 29.87 + 30 + 87 + 19 =
  30. 30.67 + 77 + 30 + 36 =
  31. 31.89 + 64 + 34 + 43 =
  32. 32.68 + 76 + 70 + 60 =
  33. 33.28 + 39 + 67 + 38 =
  34. 34.27 + 71 + 75 + 16 =
  35. 35.27 + 48 + 30 + 26 =
  36. 36.53 + 59 + 85 + 76 =
  37. 37.12 + 60 + 61 + 55 =
  38. 38.18 + 68 + 78 + 33 =
  39. 39.58 + 63 + 14 + 86 =
  40. 40.34 + 89 + 59 + 14 =

Answer key

  1. 195
  2. 165
  3. 229
  4. 175
  5. 203
  6. 280
  7. 175
  8. 295
  9. 216
  10. 195
  11. 194
  12. 202
  13. 152
  14. 147
  15. 256
  16. 231
  17. 173
  18. 95
  19. 200
  20. 204
  21. 192
  22. 244
  23. 192
  24. 110
  25. 122
  26. 169
  27. 237
  28. 265
  29. 223
  30. 210
  31. 230
  32. 274
  33. 172
  34. 189
  35. 131
  36. 273
  37. 188
  38. 197
  39. 221
  40. 196

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