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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 792 · 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. 1.52 + 69 + 30 + 22 =
  2. 2.23 + 13 + 74 + 26 =
  3. 3.16 + 66 + 23 + 85 =
  4. 4.38 + 26 + 14 + 64 =
  5. 5.48 + 51 + 68 + 23 =
  6. 6.19 + 58 + 15 + 60 =
  7. 7.31 + 45 + 65 + 80 =
  8. 8.22 + 76 + 72 + 74 =
  9. 9.48 + 52 + 49 + 56 =
  10. 10.77 + 30 + 27 + 25 =
  11. 11.36 + 53 + 86 + 28 =
  12. 12.28 + 46 + 61 + 20 =
  13. 13.55 + 62 + 27 + 17 =
  14. 14.24 + 30 + 89 + 28 =
  15. 15.54 + 71 + 69 + 87 =
  16. 16.29 + 35 + 39 + 30 =
  17. 17.80 + 50 + 31 + 31 =
  18. 18.24 + 18 + 74 + 39 =
  19. 19.43 + 82 + 49 + 34 =
  20. 20.54 + 24 + 55 + 72 =
  21. 21.89 + 72 + 32 + 89 =
  22. 22.15 + 40 + 41 + 36 =
  23. 23.76 + 49 + 30 + 35 =
  24. 24.63 + 76 + 83 + 55 =
  25. 25.46 + 23 + 57 + 43 =
  26. 26.40 + 28 + 49 + 52 =
  27. 27.63 + 24 + 79 + 71 =
  28. 28.15 + 63 + 67 + 34 =
  29. 29.83 + 80 + 63 + 85 =
  30. 30.22 + 30 + 57 + 38 =
  31. 31.29 + 56 + 31 + 75 =
  32. 32.27 + 24 + 33 + 27 =
  33. 33.18 + 28 + 53 + 83 =
  34. 34.76 + 51 + 76 + 25 =
  35. 35.83 + 32 + 78 + 50 =
  36. 36.29 + 75 + 11 + 27 =
  37. 37.27 + 54 + 52 + 19 =
  38. 38.83 + 18 + 62 + 79 =
  39. 39.81 + 58 + 88 + 86 =
  40. 40.86 + 25 + 40 + 74 =

Answer key

  1. 173
  2. 136
  3. 190
  4. 142
  5. 190
  6. 152
  7. 221
  8. 244
  9. 205
  10. 159
  11. 203
  12. 155
  13. 161
  14. 171
  15. 281
  16. 133
  17. 192
  18. 155
  19. 208
  20. 205
  21. 282
  22. 132
  23. 190
  24. 277
  25. 169
  26. 169
  27. 237
  28. 179
  29. 311
  30. 147
  31. 191
  32. 111
  33. 182
  34. 228
  35. 243
  36. 142
  37. 152
  38. 242
  39. 313
  40. 225

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