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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 395 · 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. 1.83 + 74 + 37 + 12 =
  2. 2.14 + 55 + 36 + 27 =
  3. 3.28 + 25 + 22 + 41 =
  4. 4.16 + 86 + 35 + 76 =
  5. 5.76 + 23 + 39 + 16 =
  6. 6.64 + 22 + 75 + 74 =
  7. 7.49 + 71 + 41 + 34 =
  8. 8.25 + 48 + 81 + 72 =
  9. 9.39 + 55 + 23 + 65 =
  10. 10.34 + 66 + 40 + 78 =
  11. 11.70 + 29 + 29 + 23 =
  12. 12.37 + 30 + 46 + 73 =
  13. 13.87 + 64 + 33 + 58 =
  14. 14.31 + 11 + 22 + 27 =
  15. 15.35 + 32 + 44 + 30 =
  16. 16.29 + 40 + 80 + 23 =
  17. 17.19 + 55 + 34 + 72 =
  18. 18.69 + 27 + 77 + 65 =
  19. 19.58 + 84 + 38 + 49 =
  20. 20.33 + 62 + 51 + 57 =
  21. 21.32 + 47 + 62 + 75 =
  22. 22.88 + 33 + 51 + 35 =
  23. 23.53 + 65 + 11 + 77 =
  24. 24.80 + 60 + 39 + 26 =
  25. 25.76 + 55 + 65 + 52 =
  26. 26.60 + 20 + 41 + 65 =
  27. 27.70 + 83 + 72 + 48 =
  28. 28.85 + 51 + 75 + 71 =
  29. 29.28 + 17 + 24 + 73 =
  30. 30.38 + 50 + 29 + 80 =
  31. 31.40 + 84 + 83 + 69 =
  32. 32.32 + 50 + 63 + 35 =
  33. 33.64 + 36 + 74 + 51 =
  34. 34.72 + 51 + 56 + 29 =
  35. 35.69 + 13 + 21 + 71 =
  36. 36.28 + 36 + 22 + 84 =
  37. 37.35 + 30 + 28 + 48 =
  38. 38.41 + 54 + 86 + 54 =
  39. 39.38 + 40 + 76 + 41 =
  40. 40.36 + 17 + 76 + 38 =

Answer key

  1. 206
  2. 132
  3. 116
  4. 213
  5. 154
  6. 235
  7. 195
  8. 226
  9. 182
  10. 218
  11. 151
  12. 186
  13. 242
  14. 91
  15. 141
  16. 172
  17. 180
  18. 238
  19. 229
  20. 203
  21. 216
  22. 207
  23. 206
  24. 205
  25. 248
  26. 186
  27. 273
  28. 282
  29. 142
  30. 197
  31. 276
  32. 180
  33. 225
  34. 208
  35. 174
  36. 170
  37. 141
  38. 235
  39. 195
  40. 167

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