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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 183 · 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. 1.89 + 26 + 63 + 26 =
  2. 2.46 + 25 + 57 + 81 =
  3. 3.30 + 17 + 75 + 83 =
  4. 4.11 + 23 + 74 + 77 =
  5. 5.82 + 74 + 86 + 40 =
  6. 6.24 + 71 + 43 + 75 =
  7. 7.23 + 52 + 60 + 65 =
  8. 8.24 + 54 + 37 + 45 =
  9. 9.87 + 15 + 28 + 57 =
  10. 10.86 + 35 + 76 + 31 =
  11. 11.71 + 26 + 48 + 48 =
  12. 12.37 + 27 + 55 + 88 =
  13. 13.15 + 86 + 59 + 14 =
  14. 14.39 + 84 + 87 + 18 =
  15. 15.25 + 28 + 84 + 17 =
  16. 16.27 + 56 + 33 + 50 =
  17. 17.24 + 44 + 20 + 25 =
  18. 18.64 + 57 + 16 + 59 =
  19. 19.63 + 86 + 46 + 63 =
  20. 20.80 + 79 + 59 + 45 =
  21. 21.69 + 66 + 78 + 63 =
  22. 22.65 + 64 + 29 + 35 =
  23. 23.66 + 13 + 22 + 51 =
  24. 24.32 + 19 + 20 + 39 =
  25. 25.13 + 42 + 75 + 74 =
  26. 26.16 + 11 + 14 + 23 =
  27. 27.86 + 80 + 84 + 58 =
  28. 28.85 + 61 + 72 + 76 =
  29. 29.89 + 63 + 78 + 77 =
  30. 30.81 + 28 + 27 + 36 =
  31. 31.38 + 21 + 14 + 84 =
  32. 32.15 + 29 + 33 + 74 =
  33. 33.33 + 16 + 24 + 83 =
  34. 34.26 + 14 + 14 + 27 =
  35. 35.29 + 53 + 88 + 26 =
  36. 36.73 + 86 + 71 + 31 =
  37. 37.81 + 69 + 75 + 67 =
  38. 38.82 + 52 + 11 + 19 =
  39. 39.86 + 38 + 18 + 25 =
  40. 40.70 + 32 + 16 + 32 =

Answer key

  1. 204
  2. 209
  3. 205
  4. 185
  5. 282
  6. 213
  7. 200
  8. 160
  9. 187
  10. 228
  11. 193
  12. 207
  13. 174
  14. 228
  15. 154
  16. 166
  17. 113
  18. 196
  19. 258
  20. 263
  21. 276
  22. 193
  23. 152
  24. 110
  25. 204
  26. 64
  27. 308
  28. 294
  29. 307
  30. 172
  31. 157
  32. 151
  33. 156
  34. 81
  35. 196
  36. 261
  37. 292
  38. 164
  39. 167
  40. 150

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