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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 676 · 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. 1.28 + 20 + 77 + 47 =
  2. 2.38 + 21 + 76 + 46 =
  3. 3.23 + 17 + 48 + 29 =
  4. 4.62 + 15 + 44 + 32 =
  5. 5.73 + 81 + 14 + 17 =
  6. 6.71 + 65 + 55 + 46 =
  7. 7.34 + 13 + 16 + 43 =
  8. 8.24 + 32 + 85 + 31 =
  9. 9.24 + 18 + 50 + 83 =
  10. 10.27 + 68 + 80 + 75 =
  11. 11.26 + 19 + 70 + 48 =
  12. 12.65 + 56 + 14 + 61 =
  13. 13.46 + 66 + 88 + 13 =
  14. 14.70 + 72 + 59 + 14 =
  15. 15.24 + 19 + 19 + 55 =
  16. 16.27 + 34 + 41 + 59 =
  17. 17.51 + 64 + 35 + 56 =
  18. 18.37 + 22 + 24 + 31 =
  19. 19.71 + 59 + 78 + 20 =
  20. 20.71 + 46 + 78 + 40 =
  21. 21.60 + 56 + 47 + 34 =
  22. 22.58 + 86 + 52 + 54 =
  23. 23.73 + 49 + 87 + 66 =
  24. 24.65 + 82 + 23 + 47 =
  25. 25.72 + 80 + 59 + 68 =
  26. 26.55 + 24 + 14 + 38 =
  27. 27.21 + 83 + 89 + 33 =
  28. 28.41 + 84 + 72 + 37 =
  29. 29.29 + 13 + 36 + 24 =
  30. 30.82 + 12 + 84 + 38 =
  31. 31.25 + 46 + 77 + 81 =
  32. 32.44 + 24 + 77 + 72 =
  33. 33.73 + 17 + 82 + 68 =
  34. 34.47 + 53 + 46 + 27 =
  35. 35.63 + 83 + 65 + 86 =
  36. 36.18 + 89 + 51 + 31 =
  37. 37.64 + 36 + 59 + 48 =
  38. 38.11 + 31 + 16 + 48 =
  39. 39.30 + 43 + 43 + 87 =
  40. 40.72 + 34 + 31 + 50 =

Answer key

  1. 172
  2. 181
  3. 117
  4. 153
  5. 185
  6. 237
  7. 106
  8. 172
  9. 175
  10. 250
  11. 163
  12. 196
  13. 213
  14. 215
  15. 117
  16. 161
  17. 206
  18. 114
  19. 228
  20. 235
  21. 197
  22. 250
  23. 275
  24. 217
  25. 279
  26. 131
  27. 226
  28. 234
  29. 102
  30. 216
  31. 229
  32. 217
  33. 240
  34. 173
  35. 297
  36. 189
  37. 207
  38. 106
  39. 203
  40. 187

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