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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 893 · 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. 1.80 + 76 + 46 + 36 =
  2. 2.87 + 17 + 77 + 48 =
  3. 3.20 + 75 + 38 + 41 =
  4. 4.79 + 50 + 69 + 15 =
  5. 5.11 + 60 + 82 + 18 =
  6. 6.78 + 49 + 30 + 29 =
  7. 7.36 + 24 + 33 + 36 =
  8. 8.29 + 42 + 34 + 60 =
  9. 9.20 + 35 + 41 + 25 =
  10. 10.36 + 83 + 17 + 25 =
  11. 11.43 + 77 + 87 + 18 =
  12. 12.76 + 72 + 41 + 62 =
  13. 13.79 + 32 + 77 + 42 =
  14. 14.44 + 27 + 68 + 32 =
  15. 15.48 + 86 + 36 + 82 =
  16. 16.85 + 85 + 14 + 66 =
  17. 17.31 + 12 + 77 + 37 =
  18. 18.44 + 70 + 83 + 41 =
  19. 19.75 + 38 + 43 + 56 =
  20. 20.85 + 87 + 17 + 28 =
  21. 21.85 + 41 + 16 + 43 =
  22. 22.69 + 75 + 11 + 28 =
  23. 23.84 + 80 + 33 + 53 =
  24. 24.47 + 71 + 50 + 42 =
  25. 25.13 + 23 + 32 + 49 =
  26. 26.48 + 14 + 24 + 84 =
  27. 27.24 + 39 + 30 + 13 =
  28. 28.66 + 15 + 67 + 15 =
  29. 29.60 + 34 + 71 + 82 =
  30. 30.71 + 11 + 46 + 36 =
  31. 31.37 + 29 + 49 + 43 =
  32. 32.63 + 21 + 38 + 35 =
  33. 33.15 + 66 + 86 + 58 =
  34. 34.27 + 37 + 26 + 68 =
  35. 35.46 + 16 + 42 + 58 =
  36. 36.76 + 49 + 34 + 83 =
  37. 37.46 + 74 + 84 + 31 =
  38. 38.28 + 21 + 89 + 17 =
  39. 39.65 + 24 + 54 + 38 =
  40. 40.45 + 38 + 72 + 14 =

Answer key

  1. 238
  2. 229
  3. 174
  4. 213
  5. 171
  6. 186
  7. 129
  8. 165
  9. 121
  10. 161
  11. 225
  12. 251
  13. 230
  14. 171
  15. 252
  16. 250
  17. 157
  18. 238
  19. 212
  20. 217
  21. 185
  22. 183
  23. 250
  24. 210
  25. 117
  26. 170
  27. 106
  28. 163
  29. 247
  30. 164
  31. 158
  32. 157
  33. 225
  34. 158
  35. 162
  36. 242
  37. 235
  38. 155
  39. 181
  40. 169

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