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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 728 · 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. 1.62 + 79 + 19 + 81 =
  2. 2.40 + 24 + 13 + 27 =
  3. 3.49 + 64 + 26 + 42 =
  4. 4.18 + 63 + 70 + 60 =
  5. 5.79 + 29 + 36 + 58 =
  6. 6.27 + 17 + 56 + 53 =
  7. 7.72 + 79 + 71 + 27 =
  8. 8.23 + 49 + 30 + 21 =
  9. 9.65 + 14 + 26 + 67 =
  10. 10.49 + 89 + 53 + 49 =
  11. 11.18 + 58 + 67 + 65 =
  12. 12.24 + 30 + 77 + 31 =
  13. 13.41 + 22 + 32 + 72 =
  14. 14.13 + 86 + 16 + 75 =
  15. 15.22 + 47 + 84 + 27 =
  16. 16.33 + 72 + 32 + 29 =
  17. 17.56 + 13 + 14 + 19 =
  18. 18.15 + 80 + 25 + 27 =
  19. 19.19 + 41 + 14 + 82 =
  20. 20.21 + 63 + 34 + 36 =
  21. 21.79 + 32 + 12 + 65 =
  22. 22.25 + 34 + 37 + 19 =
  23. 23.69 + 85 + 18 + 84 =
  24. 24.14 + 23 + 31 + 85 =
  25. 25.37 + 11 + 86 + 16 =
  26. 26.78 + 16 + 85 + 84 =
  27. 27.14 + 77 + 42 + 69 =
  28. 28.84 + 19 + 22 + 69 =
  29. 29.27 + 81 + 43 + 64 =
  30. 30.83 + 45 + 46 + 14 =
  31. 31.39 + 76 + 13 + 41 =
  32. 32.32 + 58 + 70 + 24 =
  33. 33.28 + 76 + 52 + 49 =
  34. 34.12 + 76 + 41 + 42 =
  35. 35.67 + 62 + 21 + 50 =
  36. 36.28 + 66 + 71 + 83 =
  37. 37.31 + 57 + 14 + 14 =
  38. 38.51 + 78 + 19 + 80 =
  39. 39.54 + 23 + 54 + 66 =
  40. 40.89 + 64 + 84 + 66 =

Answer key

  1. 241
  2. 104
  3. 181
  4. 211
  5. 202
  6. 153
  7. 249
  8. 123
  9. 172
  10. 240
  11. 208
  12. 162
  13. 167
  14. 190
  15. 180
  16. 166
  17. 102
  18. 147
  19. 156
  20. 154
  21. 188
  22. 115
  23. 256
  24. 153
  25. 150
  26. 263
  27. 202
  28. 194
  29. 215
  30. 188
  31. 169
  32. 184
  33. 205
  34. 171
  35. 200
  36. 248
  37. 116
  38. 228
  39. 197
  40. 303

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