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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 193 · 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. 1.12 + 23 + 58 + 11 =
  2. 2.42 + 61 + 47 + 52 =
  3. 3.78 + 21 + 17 + 17 =
  4. 4.16 + 42 + 83 + 88 =
  5. 5.56 + 27 + 67 + 86 =
  6. 6.34 + 16 + 24 + 57 =
  7. 7.70 + 53 + 89 + 33 =
  8. 8.78 + 75 + 68 + 11 =
  9. 9.74 + 74 + 75 + 68 =
  10. 10.31 + 53 + 79 + 19 =
  11. 11.44 + 56 + 37 + 35 =
  12. 12.25 + 56 + 31 + 63 =
  13. 13.76 + 26 + 87 + 72 =
  14. 14.88 + 62 + 61 + 45 =
  15. 15.82 + 14 + 28 + 74 =
  16. 16.55 + 16 + 20 + 24 =
  17. 17.47 + 32 + 33 + 21 =
  18. 18.53 + 45 + 65 + 78 =
  19. 19.84 + 30 + 38 + 30 =
  20. 20.83 + 78 + 21 + 41 =
  21. 21.66 + 88 + 84 + 18 =
  22. 22.78 + 65 + 49 + 26 =
  23. 23.82 + 24 + 39 + 33 =
  24. 24.88 + 35 + 22 + 65 =
  25. 25.36 + 58 + 28 + 71 =
  26. 26.23 + 45 + 55 + 33 =
  27. 27.46 + 58 + 48 + 30 =
  28. 28.76 + 27 + 28 + 35 =
  29. 29.54 + 73 + 15 + 11 =
  30. 30.45 + 15 + 42 + 16 =
  31. 31.23 + 25 + 81 + 40 =
  32. 32.60 + 50 + 17 + 16 =
  33. 33.18 + 17 + 60 + 12 =
  34. 34.81 + 80 + 11 + 42 =
  35. 35.56 + 50 + 78 + 48 =
  36. 36.61 + 87 + 58 + 87 =
  37. 37.29 + 45 + 54 + 18 =
  38. 38.38 + 23 + 14 + 71 =
  39. 39.82 + 65 + 64 + 14 =
  40. 40.64 + 53 + 48 + 29 =

Answer key

  1. 104
  2. 202
  3. 133
  4. 229
  5. 236
  6. 131
  7. 245
  8. 232
  9. 291
  10. 182
  11. 172
  12. 175
  13. 261
  14. 256
  15. 198
  16. 115
  17. 133
  18. 241
  19. 182
  20. 223
  21. 256
  22. 218
  23. 178
  24. 210
  25. 193
  26. 156
  27. 182
  28. 166
  29. 153
  30. 118
  31. 169
  32. 143
  33. 107
  34. 214
  35. 232
  36. 293
  37. 146
  38. 146
  39. 225
  40. 194

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