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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 56 · 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. 1.13 + 77 + 48 + 15 =
  2. 2.46 + 34 + 71 + 61 =
  3. 3.67 + 75 + 69 + 24 =
  4. 4.64 + 22 + 25 + 32 =
  5. 5.11 + 15 + 13 + 47 =
  6. 6.69 + 77 + 72 + 18 =
  7. 7.85 + 32 + 72 + 48 =
  8. 8.11 + 48 + 27 + 63 =
  9. 9.26 + 13 + 61 + 30 =
  10. 10.87 + 17 + 57 + 81 =
  11. 11.82 + 30 + 69 + 12 =
  12. 12.63 + 38 + 43 + 22 =
  13. 13.80 + 17 + 11 + 15 =
  14. 14.11 + 81 + 35 + 41 =
  15. 15.27 + 30 + 19 + 53 =
  16. 16.12 + 22 + 56 + 16 =
  17. 17.64 + 26 + 15 + 19 =
  18. 18.58 + 67 + 31 + 56 =
  19. 19.65 + 44 + 28 + 35 =
  20. 20.24 + 15 + 20 + 79 =
  21. 21.88 + 30 + 80 + 41 =
  22. 22.32 + 27 + 52 + 55 =
  23. 23.68 + 81 + 35 + 26 =
  24. 24.30 + 16 + 50 + 68 =
  25. 25.25 + 88 + 45 + 46 =
  26. 26.48 + 15 + 71 + 62 =
  27. 27.53 + 89 + 54 + 81 =
  28. 28.61 + 30 + 34 + 85 =
  29. 29.82 + 29 + 25 + 67 =
  30. 30.69 + 57 + 47 + 73 =
  31. 31.24 + 42 + 66 + 12 =
  32. 32.13 + 73 + 85 + 24 =
  33. 33.28 + 60 + 34 + 82 =
  34. 34.39 + 17 + 74 + 89 =
  35. 35.45 + 48 + 48 + 82 =
  36. 36.32 + 25 + 67 + 11 =
  37. 37.88 + 67 + 69 + 68 =
  38. 38.63 + 48 + 84 + 69 =
  39. 39.13 + 42 + 26 + 70 =
  40. 40.49 + 52 + 27 + 22 =

Answer key

  1. 153
  2. 212
  3. 235
  4. 143
  5. 86
  6. 236
  7. 237
  8. 149
  9. 130
  10. 242
  11. 193
  12. 166
  13. 123
  14. 168
  15. 129
  16. 106
  17. 124
  18. 212
  19. 172
  20. 138
  21. 239
  22. 166
  23. 210
  24. 164
  25. 204
  26. 196
  27. 277
  28. 210
  29. 203
  30. 246
  31. 144
  32. 195
  33. 204
  34. 219
  35. 223
  36. 135
  37. 292
  38. 264
  39. 151
  40. 150

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