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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 795 · 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. 1.32 + 58 + 57 + 77 =
  2. 2.44 + 32 + 65 + 82 =
  3. 3.42 + 33 + 44 + 63 =
  4. 4.60 + 85 + 71 + 84 =
  5. 5.35 + 50 + 35 + 21 =
  6. 6.73 + 54 + 64 + 38 =
  7. 7.11 + 75 + 21 + 65 =
  8. 8.89 + 44 + 13 + 18 =
  9. 9.64 + 87 + 13 + 55 =
  10. 10.52 + 85 + 27 + 76 =
  11. 11.87 + 66 + 64 + 87 =
  12. 12.37 + 85 + 16 + 24 =
  13. 13.21 + 14 + 25 + 24 =
  14. 14.79 + 81 + 64 + 69 =
  15. 15.60 + 70 + 20 + 24 =
  16. 16.13 + 29 + 39 + 70 =
  17. 17.11 + 48 + 65 + 89 =
  18. 18.21 + 49 + 51 + 13 =
  19. 19.84 + 34 + 12 + 33 =
  20. 20.27 + 28 + 59 + 31 =
  21. 21.81 + 62 + 23 + 89 =
  22. 22.85 + 73 + 66 + 57 =
  23. 23.18 + 48 + 46 + 73 =
  24. 24.41 + 14 + 44 + 63 =
  25. 25.68 + 33 + 77 + 36 =
  26. 26.56 + 16 + 58 + 47 =
  27. 27.55 + 22 + 89 + 36 =
  28. 28.61 + 36 + 60 + 80 =
  29. 29.13 + 30 + 21 + 56 =
  30. 30.61 + 45 + 25 + 69 =
  31. 31.40 + 31 + 62 + 52 =
  32. 32.76 + 57 + 76 + 57 =
  33. 33.33 + 70 + 29 + 44 =
  34. 34.42 + 31 + 22 + 24 =
  35. 35.69 + 52 + 36 + 15 =
  36. 36.81 + 24 + 21 + 62 =
  37. 37.55 + 56 + 59 + 71 =
  38. 38.29 + 28 + 30 + 45 =
  39. 39.54 + 65 + 12 + 71 =
  40. 40.75 + 19 + 65 + 11 =

Answer key

  1. 224
  2. 223
  3. 182
  4. 300
  5. 141
  6. 229
  7. 172
  8. 164
  9. 219
  10. 240
  11. 304
  12. 162
  13. 84
  14. 293
  15. 174
  16. 151
  17. 213
  18. 134
  19. 163
  20. 145
  21. 255
  22. 281
  23. 185
  24. 162
  25. 214
  26. 177
  27. 202
  28. 237
  29. 120
  30. 200
  31. 185
  32. 266
  33. 176
  34. 119
  35. 172
  36. 188
  37. 241
  38. 132
  39. 202
  40. 170

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