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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 43 · 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. 1.25 + 45 + 38 + 84 =
  2. 2.86 + 32 + 57 + 64 =
  3. 3.89 + 61 + 21 + 25 =
  4. 4.74 + 25 + 78 + 19 =
  5. 5.16 + 75 + 56 + 62 =
  6. 6.19 + 81 + 72 + 27 =
  7. 7.28 + 76 + 50 + 58 =
  8. 8.77 + 16 + 43 + 44 =
  9. 9.31 + 16 + 27 + 58 =
  10. 10.23 + 69 + 72 + 66 =
  11. 11.20 + 59 + 38 + 15 =
  12. 12.68 + 32 + 29 + 22 =
  13. 13.62 + 61 + 87 + 55 =
  14. 14.18 + 44 + 85 + 15 =
  15. 15.85 + 50 + 17 + 31 =
  16. 16.49 + 81 + 16 + 35 =
  17. 17.20 + 80 + 58 + 40 =
  18. 18.85 + 35 + 23 + 87 =
  19. 19.22 + 43 + 78 + 20 =
  20. 20.71 + 31 + 32 + 21 =
  21. 21.78 + 83 + 58 + 85 =
  22. 22.81 + 54 + 57 + 17 =
  23. 23.30 + 43 + 72 + 28 =
  24. 24.50 + 65 + 66 + 66 =
  25. 25.24 + 15 + 28 + 46 =
  26. 26.20 + 57 + 76 + 16 =
  27. 27.19 + 51 + 22 + 85 =
  28. 28.54 + 73 + 74 + 33 =
  29. 29.18 + 87 + 79 + 30 =
  30. 30.59 + 48 + 65 + 29 =
  31. 31.23 + 56 + 25 + 11 =
  32. 32.19 + 40 + 14 + 22 =
  33. 33.84 + 47 + 32 + 15 =
  34. 34.15 + 57 + 87 + 55 =
  35. 35.29 + 53 + 28 + 67 =
  36. 36.28 + 57 + 19 + 27 =
  37. 37.81 + 40 + 42 + 75 =
  38. 38.21 + 52 + 69 + 60 =
  39. 39.14 + 83 + 55 + 59 =
  40. 40.46 + 85 + 86 + 20 =

Answer key

  1. 192
  2. 239
  3. 196
  4. 196
  5. 209
  6. 199
  7. 212
  8. 180
  9. 132
  10. 230
  11. 132
  12. 151
  13. 265
  14. 162
  15. 183
  16. 181
  17. 198
  18. 230
  19. 163
  20. 155
  21. 304
  22. 209
  23. 173
  24. 247
  25. 113
  26. 169
  27. 177
  28. 234
  29. 214
  30. 201
  31. 115
  32. 95
  33. 178
  34. 214
  35. 177
  36. 131
  37. 238
  38. 202
  39. 211
  40. 237

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