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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 523 · 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. 1.24 + 83 + 88 + 46 =
  2. 2.16 + 18 + 54 + 82 =
  3. 3.35 + 42 + 41 + 41 =
  4. 4.64 + 79 + 36 + 28 =
  5. 5.80 + 49 + 82 + 76 =
  6. 6.65 + 39 + 51 + 68 =
  7. 7.70 + 66 + 11 + 30 =
  8. 8.69 + 87 + 52 + 32 =
  9. 9.20 + 58 + 38 + 32 =
  10. 10.58 + 82 + 38 + 36 =
  11. 11.69 + 35 + 50 + 49 =
  12. 12.79 + 89 + 26 + 31 =
  13. 13.69 + 74 + 64 + 68 =
  14. 14.23 + 75 + 79 + 30 =
  15. 15.86 + 80 + 33 + 45 =
  16. 16.56 + 52 + 52 + 43 =
  17. 17.64 + 72 + 57 + 59 =
  18. 18.71 + 47 + 55 + 39 =
  19. 19.15 + 29 + 22 + 75 =
  20. 20.14 + 17 + 14 + 60 =
  21. 21.61 + 21 + 19 + 17 =
  22. 22.21 + 30 + 37 + 41 =
  23. 23.12 + 37 + 79 + 88 =
  24. 24.24 + 74 + 13 + 47 =
  25. 25.57 + 77 + 13 + 48 =
  26. 26.31 + 37 + 16 + 43 =
  27. 27.25 + 63 + 63 + 78 =
  28. 28.58 + 20 + 81 + 11 =
  29. 29.66 + 38 + 89 + 27 =
  30. 30.75 + 53 + 24 + 64 =
  31. 31.53 + 70 + 70 + 18 =
  32. 32.46 + 70 + 40 + 76 =
  33. 33.16 + 89 + 87 + 18 =
  34. 34.73 + 60 + 71 + 66 =
  35. 35.82 + 27 + 57 + 31 =
  36. 36.80 + 62 + 61 + 54 =
  37. 37.31 + 83 + 26 + 30 =
  38. 38.54 + 36 + 77 + 26 =
  39. 39.12 + 66 + 35 + 81 =
  40. 40.44 + 40 + 78 + 44 =

Answer key

  1. 241
  2. 170
  3. 159
  4. 207
  5. 287
  6. 223
  7. 177
  8. 240
  9. 148
  10. 214
  11. 203
  12. 225
  13. 275
  14. 207
  15. 244
  16. 203
  17. 252
  18. 212
  19. 141
  20. 105
  21. 118
  22. 129
  23. 216
  24. 158
  25. 195
  26. 127
  27. 229
  28. 170
  29. 220
  30. 216
  31. 211
  32. 232
  33. 210
  34. 270
  35. 197
  36. 257
  37. 170
  38. 193
  39. 194
  40. 206

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