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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 532 · 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. 1.85 + 67 + 83 + 80 =
  2. 2.11 + 62 + 17 + 41 =
  3. 3.58 + 82 + 80 + 12 =
  4. 4.21 + 82 + 14 + 85 =
  5. 5.58 + 32 + 28 + 83 =
  6. 6.59 + 27 + 78 + 42 =
  7. 7.55 + 54 + 52 + 50 =
  8. 8.13 + 19 + 33 + 14 =
  9. 9.35 + 30 + 29 + 66 =
  10. 10.31 + 32 + 64 + 21 =
  11. 11.87 + 41 + 21 + 48 =
  12. 12.46 + 25 + 37 + 50 =
  13. 13.31 + 70 + 32 + 47 =
  14. 14.33 + 24 + 77 + 87 =
  15. 15.22 + 19 + 29 + 49 =
  16. 16.17 + 62 + 60 + 39 =
  17. 17.39 + 80 + 29 + 66 =
  18. 18.32 + 68 + 20 + 62 =
  19. 19.73 + 13 + 13 + 64 =
  20. 20.39 + 72 + 33 + 55 =
  21. 21.13 + 86 + 60 + 57 =
  22. 22.49 + 29 + 48 + 29 =
  23. 23.28 + 86 + 52 + 42 =
  24. 24.26 + 79 + 55 + 19 =
  25. 25.12 + 32 + 75 + 28 =
  26. 26.56 + 19 + 64 + 35 =
  27. 27.23 + 48 + 57 + 86 =
  28. 28.29 + 68 + 51 + 33 =
  29. 29.83 + 23 + 79 + 27 =
  30. 30.43 + 63 + 44 + 51 =
  31. 31.15 + 65 + 87 + 20 =
  32. 32.32 + 24 + 78 + 76 =
  33. 33.29 + 65 + 77 + 56 =
  34. 34.86 + 51 + 53 + 89 =
  35. 35.27 + 49 + 14 + 16 =
  36. 36.83 + 19 + 15 + 21 =
  37. 37.12 + 84 + 73 + 57 =
  38. 38.80 + 34 + 27 + 34 =
  39. 39.51 + 35 + 60 + 79 =
  40. 40.21 + 26 + 87 + 58 =

Answer key

  1. 315
  2. 131
  3. 232
  4. 202
  5. 201
  6. 206
  7. 211
  8. 79
  9. 160
  10. 148
  11. 197
  12. 158
  13. 180
  14. 221
  15. 119
  16. 178
  17. 214
  18. 182
  19. 163
  20. 199
  21. 216
  22. 155
  23. 208
  24. 179
  25. 147
  26. 174
  27. 214
  28. 181
  29. 212
  30. 201
  31. 187
  32. 210
  33. 227
  34. 279
  35. 106
  36. 138
  37. 226
  38. 175
  39. 225
  40. 192

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