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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 22 · 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. 1.17 + 26 + 19 + 34 =
  2. 2.49 + 59 + 78 + 69 =
  3. 3.49 + 83 + 84 + 67 =
  4. 4.44 + 38 + 36 + 16 =
  5. 5.20 + 32 + 27 + 62 =
  6. 6.68 + 81 + 35 + 65 =
  7. 7.87 + 36 + 12 + 42 =
  8. 8.32 + 85 + 75 + 38 =
  9. 9.45 + 15 + 79 + 68 =
  10. 10.35 + 53 + 11 + 72 =
  11. 11.81 + 26 + 43 + 18 =
  12. 12.65 + 23 + 13 + 21 =
  13. 13.37 + 87 + 78 + 85 =
  14. 14.70 + 16 + 19 + 87 =
  15. 15.79 + 33 + 55 + 62 =
  16. 16.26 + 18 + 60 + 33 =
  17. 17.82 + 65 + 40 + 88 =
  18. 18.45 + 41 + 73 + 29 =
  19. 19.20 + 15 + 41 + 87 =
  20. 20.84 + 27 + 89 + 28 =
  21. 21.44 + 36 + 53 + 45 =
  22. 22.39 + 33 + 12 + 45 =
  23. 23.21 + 65 + 12 + 31 =
  24. 24.57 + 36 + 19 + 30 =
  25. 25.20 + 30 + 88 + 12 =
  26. 26.87 + 16 + 34 + 80 =
  27. 27.33 + 42 + 34 + 47 =
  28. 28.85 + 57 + 53 + 20 =
  29. 29.89 + 40 + 58 + 51 =
  30. 30.21 + 28 + 23 + 19 =
  31. 31.24 + 22 + 44 + 75 =
  32. 32.78 + 45 + 46 + 35 =
  33. 33.60 + 28 + 31 + 20 =
  34. 34.82 + 70 + 43 + 59 =
  35. 35.23 + 60 + 85 + 79 =
  36. 36.65 + 48 + 11 + 22 =
  37. 37.62 + 68 + 12 + 32 =
  38. 38.62 + 74 + 28 + 19 =
  39. 39.64 + 31 + 69 + 52 =
  40. 40.75 + 43 + 18 + 34 =

Answer key

  1. 96
  2. 255
  3. 283
  4. 134
  5. 141
  6. 249
  7. 177
  8. 230
  9. 207
  10. 171
  11. 168
  12. 122
  13. 287
  14. 192
  15. 229
  16. 137
  17. 275
  18. 188
  19. 163
  20. 228
  21. 178
  22. 129
  23. 129
  24. 142
  25. 150
  26. 217
  27. 156
  28. 215
  29. 238
  30. 91
  31. 165
  32. 204
  33. 139
  34. 254
  35. 247
  36. 146
  37. 174
  38. 183
  39. 216
  40. 170

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