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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 181 · 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. 1.20 + 14 + 59 + 74 =
  2. 2.11 + 47 + 76 + 27 =
  3. 3.40 + 41 + 87 + 27 =
  4. 4.20 + 53 + 33 + 81 =
  5. 5.26 + 49 + 52 + 46 =
  6. 6.16 + 28 + 21 + 52 =
  7. 7.26 + 43 + 88 + 40 =
  8. 8.25 + 76 + 18 + 62 =
  9. 9.42 + 17 + 44 + 33 =
  10. 10.20 + 23 + 22 + 61 =
  11. 11.37 + 52 + 42 + 13 =
  12. 12.67 + 14 + 64 + 41 =
  13. 13.20 + 48 + 60 + 21 =
  14. 14.74 + 59 + 41 + 31 =
  15. 15.56 + 53 + 37 + 21 =
  16. 16.47 + 86 + 83 + 58 =
  17. 17.36 + 46 + 57 + 28 =
  18. 18.36 + 45 + 62 + 24 =
  19. 19.12 + 76 + 55 + 46 =
  20. 20.11 + 60 + 86 + 43 =
  21. 21.43 + 22 + 34 + 50 =
  22. 22.15 + 84 + 59 + 85 =
  23. 23.12 + 21 + 67 + 49 =
  24. 24.60 + 80 + 39 + 33 =
  25. 25.43 + 17 + 27 + 25 =
  26. 26.64 + 79 + 48 + 50 =
  27. 27.17 + 35 + 63 + 68 =
  28. 28.32 + 22 + 33 + 60 =
  29. 29.33 + 51 + 83 + 75 =
  30. 30.11 + 56 + 79 + 17 =
  31. 31.71 + 79 + 64 + 16 =
  32. 32.88 + 25 + 86 + 45 =
  33. 33.21 + 11 + 19 + 16 =
  34. 34.18 + 29 + 89 + 45 =
  35. 35.23 + 34 + 23 + 78 =
  36. 36.32 + 85 + 12 + 88 =
  37. 37.16 + 18 + 74 + 56 =
  38. 38.20 + 67 + 76 + 76 =
  39. 39.70 + 45 + 44 + 61 =
  40. 40.33 + 24 + 66 + 54 =

Answer key

  1. 167
  2. 161
  3. 195
  4. 187
  5. 173
  6. 117
  7. 197
  8. 181
  9. 136
  10. 126
  11. 144
  12. 186
  13. 149
  14. 205
  15. 167
  16. 274
  17. 167
  18. 167
  19. 189
  20. 200
  21. 149
  22. 243
  23. 149
  24. 212
  25. 112
  26. 241
  27. 183
  28. 147
  29. 242
  30. 163
  31. 230
  32. 244
  33. 67
  34. 181
  35. 158
  36. 217
  37. 164
  38. 239
  39. 220
  40. 177

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