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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 722 · 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. 1.35 + 29 + 72 + 57 =
  2. 2.17 + 29 + 67 + 24 =
  3. 3.11 + 59 + 65 + 14 =
  4. 4.29 + 57 + 22 + 19 =
  5. 5.67 + 36 + 48 + 63 =
  6. 6.43 + 78 + 29 + 14 =
  7. 7.23 + 75 + 15 + 25 =
  8. 8.24 + 83 + 70 + 84 =
  9. 9.73 + 35 + 23 + 32 =
  10. 10.83 + 74 + 30 + 84 =
  11. 11.58 + 28 + 16 + 23 =
  12. 12.62 + 82 + 62 + 31 =
  13. 13.38 + 45 + 71 + 12 =
  14. 14.22 + 76 + 22 + 78 =
  15. 15.28 + 37 + 29 + 25 =
  16. 16.32 + 59 + 13 + 51 =
  17. 17.54 + 11 + 76 + 72 =
  18. 18.62 + 49 + 54 + 28 =
  19. 19.39 + 33 + 64 + 40 =
  20. 20.16 + 49 + 47 + 56 =
  21. 21.82 + 78 + 89 + 84 =
  22. 22.21 + 70 + 23 + 60 =
  23. 23.13 + 75 + 88 + 75 =
  24. 24.84 + 12 + 62 + 14 =
  25. 25.46 + 73 + 51 + 72 =
  26. 26.27 + 61 + 29 + 38 =
  27. 27.43 + 79 + 75 + 50 =
  28. 28.71 + 69 + 50 + 57 =
  29. 29.35 + 60 + 77 + 58 =
  30. 30.26 + 21 + 39 + 16 =
  31. 31.25 + 61 + 58 + 30 =
  32. 32.40 + 83 + 84 + 22 =
  33. 33.29 + 77 + 16 + 60 =
  34. 34.71 + 76 + 26 + 11 =
  35. 35.53 + 44 + 74 + 42 =
  36. 36.77 + 41 + 52 + 49 =
  37. 37.21 + 65 + 53 + 30 =
  38. 38.34 + 17 + 81 + 88 =
  39. 39.68 + 21 + 55 + 34 =
  40. 40.34 + 52 + 31 + 63 =

Answer key

  1. 193
  2. 137
  3. 149
  4. 127
  5. 214
  6. 164
  7. 138
  8. 261
  9. 163
  10. 271
  11. 125
  12. 237
  13. 166
  14. 198
  15. 119
  16. 155
  17. 213
  18. 193
  19. 176
  20. 168
  21. 333
  22. 174
  23. 251
  24. 172
  25. 242
  26. 155
  27. 247
  28. 247
  29. 230
  30. 102
  31. 174
  32. 229
  33. 182
  34. 184
  35. 213
  36. 219
  37. 169
  38. 220
  39. 178
  40. 180

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