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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 754 · 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. 1.54 + 80 + 21 + 72 =
  2. 2.75 + 29 + 54 + 86 =
  3. 3.56 + 68 + 73 + 18 =
  4. 4.82 + 28 + 53 + 77 =
  5. 5.67 + 37 + 71 + 26 =
  6. 6.87 + 88 + 19 + 31 =
  7. 7.49 + 57 + 11 + 26 =
  8. 8.12 + 88 + 19 + 15 =
  9. 9.89 + 60 + 41 + 36 =
  10. 10.82 + 54 + 74 + 60 =
  11. 11.72 + 83 + 25 + 50 =
  12. 12.60 + 40 + 65 + 56 =
  13. 13.38 + 23 + 20 + 68 =
  14. 14.79 + 64 + 45 + 59 =
  15. 15.64 + 55 + 49 + 14 =
  16. 16.65 + 18 + 19 + 78 =
  17. 17.42 + 68 + 67 + 68 =
  18. 18.25 + 47 + 67 + 35 =
  19. 19.47 + 69 + 87 + 59 =
  20. 20.32 + 83 + 55 + 32 =
  21. 21.62 + 40 + 25 + 64 =
  22. 22.53 + 65 + 88 + 64 =
  23. 23.81 + 51 + 31 + 39 =
  24. 24.26 + 15 + 76 + 26 =
  25. 25.86 + 19 + 12 + 32 =
  26. 26.16 + 26 + 23 + 59 =
  27. 27.33 + 18 + 69 + 13 =
  28. 28.57 + 85 + 20 + 23 =
  29. 29.30 + 66 + 42 + 44 =
  30. 30.37 + 25 + 63 + 87 =
  31. 31.59 + 15 + 82 + 11 =
  32. 32.83 + 65 + 33 + 59 =
  33. 33.82 + 53 + 55 + 60 =
  34. 34.70 + 65 + 28 + 38 =
  35. 35.67 + 43 + 74 + 60 =
  36. 36.47 + 53 + 65 + 16 =
  37. 37.65 + 84 + 57 + 47 =
  38. 38.45 + 33 + 52 + 36 =
  39. 39.43 + 49 + 53 + 12 =
  40. 40.74 + 82 + 41 + 37 =

Answer key

  1. 227
  2. 244
  3. 215
  4. 240
  5. 201
  6. 225
  7. 143
  8. 134
  9. 226
  10. 270
  11. 230
  12. 221
  13. 149
  14. 247
  15. 182
  16. 180
  17. 245
  18. 174
  19. 262
  20. 202
  21. 191
  22. 270
  23. 202
  24. 143
  25. 149
  26. 124
  27. 133
  28. 185
  29. 182
  30. 212
  31. 167
  32. 240
  33. 250
  34. 201
  35. 244
  36. 181
  37. 253
  38. 166
  39. 157
  40. 234

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