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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 93 · 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. 1.29 + 65 + 72 + 60 =
  2. 2.33 + 87 + 72 + 27 =
  3. 3.70 + 60 + 21 + 53 =
  4. 4.78 + 66 + 13 + 85 =
  5. 5.19 + 18 + 49 + 89 =
  6. 6.35 + 77 + 72 + 45 =
  7. 7.34 + 29 + 77 + 81 =
  8. 8.69 + 83 + 32 + 58 =
  9. 9.22 + 82 + 42 + 65 =
  10. 10.86 + 21 + 44 + 79 =
  11. 11.30 + 29 + 57 + 74 =
  12. 12.24 + 89 + 50 + 87 =
  13. 13.13 + 27 + 64 + 27 =
  14. 14.66 + 82 + 47 + 74 =
  15. 15.14 + 47 + 16 + 72 =
  16. 16.21 + 81 + 66 + 83 =
  17. 17.27 + 85 + 18 + 74 =
  18. 18.12 + 20 + 37 + 87 =
  19. 19.39 + 20 + 22 + 88 =
  20. 20.33 + 16 + 56 + 67 =
  21. 21.61 + 55 + 68 + 17 =
  22. 22.26 + 74 + 11 + 55 =
  23. 23.35 + 71 + 16 + 51 =
  24. 24.36 + 84 + 36 + 63 =
  25. 25.85 + 57 + 67 + 35 =
  26. 26.55 + 31 + 60 + 58 =
  27. 27.74 + 72 + 84 + 44 =
  28. 28.71 + 64 + 30 + 28 =
  29. 29.52 + 22 + 65 + 87 =
  30. 30.31 + 70 + 65 + 89 =
  31. 31.27 + 53 + 63 + 47 =
  32. 32.54 + 88 + 21 + 27 =
  33. 33.58 + 34 + 63 + 44 =
  34. 34.22 + 77 + 70 + 83 =
  35. 35.48 + 46 + 64 + 43 =
  36. 36.41 + 42 + 33 + 82 =
  37. 37.25 + 19 + 59 + 58 =
  38. 38.32 + 74 + 16 + 64 =
  39. 39.37 + 12 + 36 + 23 =
  40. 40.44 + 56 + 62 + 13 =

Answer key

  1. 226
  2. 219
  3. 204
  4. 242
  5. 175
  6. 229
  7. 221
  8. 242
  9. 211
  10. 230
  11. 190
  12. 250
  13. 131
  14. 269
  15. 149
  16. 251
  17. 204
  18. 156
  19. 169
  20. 172
  21. 201
  22. 166
  23. 173
  24. 219
  25. 244
  26. 204
  27. 274
  28. 193
  29. 226
  30. 255
  31. 190
  32. 190
  33. 199
  34. 252
  35. 201
  36. 198
  37. 161
  38. 186
  39. 108
  40. 175

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