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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 372 · 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. 1.26 + 28 + 41 + 57 =
  2. 2.19 + 85 + 26 + 13 =
  3. 3.47 + 35 + 34 + 25 =
  4. 4.69 + 19 + 38 + 82 =
  5. 5.82 + 70 + 14 + 30 =
  6. 6.58 + 34 + 76 + 51 =
  7. 7.70 + 53 + 15 + 33 =
  8. 8.29 + 78 + 33 + 72 =
  9. 9.47 + 24 + 32 + 45 =
  10. 10.15 + 81 + 35 + 29 =
  11. 11.51 + 11 + 37 + 68 =
  12. 12.79 + 89 + 47 + 48 =
  13. 13.12 + 79 + 23 + 64 =
  14. 14.54 + 45 + 66 + 25 =
  15. 15.78 + 51 + 66 + 76 =
  16. 16.71 + 66 + 60 + 69 =
  17. 17.11 + 22 + 19 + 81 =
  18. 18.39 + 83 + 30 + 12 =
  19. 19.44 + 51 + 80 + 81 =
  20. 20.71 + 48 + 17 + 61 =
  21. 21.29 + 64 + 28 + 54 =
  22. 22.25 + 20 + 19 + 21 =
  23. 23.61 + 56 + 25 + 69 =
  24. 24.32 + 11 + 38 + 56 =
  25. 25.32 + 57 + 26 + 40 =
  26. 26.81 + 14 + 75 + 18 =
  27. 27.32 + 47 + 50 + 60 =
  28. 28.51 + 87 + 61 + 44 =
  29. 29.73 + 12 + 68 + 43 =
  30. 30.49 + 19 + 28 + 77 =
  31. 31.41 + 47 + 83 + 41 =
  32. 32.64 + 17 + 49 + 56 =
  33. 33.19 + 27 + 42 + 19 =
  34. 34.70 + 24 + 67 + 89 =
  35. 35.43 + 33 + 84 + 76 =
  36. 36.27 + 71 + 32 + 44 =
  37. 37.34 + 18 + 66 + 77 =
  38. 38.57 + 36 + 36 + 44 =
  39. 39.53 + 88 + 42 + 84 =
  40. 40.18 + 61 + 40 + 19 =

Answer key

  1. 152
  2. 143
  3. 141
  4. 208
  5. 196
  6. 219
  7. 171
  8. 212
  9. 148
  10. 160
  11. 167
  12. 263
  13. 178
  14. 190
  15. 271
  16. 266
  17. 133
  18. 164
  19. 256
  20. 197
  21. 175
  22. 85
  23. 211
  24. 137
  25. 155
  26. 188
  27. 189
  28. 243
  29. 196
  30. 173
  31. 212
  32. 186
  33. 107
  34. 250
  35. 236
  36. 174
  37. 195
  38. 173
  39. 267
  40. 138

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