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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 492 · 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. 1.75 + 29 + 28 + 72 =
  2. 2.85 + 78 + 12 + 19 =
  3. 3.42 + 34 + 69 + 54 =
  4. 4.87 + 55 + 61 + 13 =
  5. 5.51 + 14 + 59 + 55 =
  6. 6.72 + 45 + 52 + 46 =
  7. 7.42 + 87 + 54 + 79 =
  8. 8.40 + 76 + 60 + 67 =
  9. 9.68 + 80 + 49 + 79 =
  10. 10.45 + 51 + 57 + 68 =
  11. 11.27 + 23 + 11 + 83 =
  12. 12.22 + 79 + 80 + 24 =
  13. 13.15 + 21 + 26 + 26 =
  14. 14.51 + 63 + 22 + 78 =
  15. 15.24 + 74 + 83 + 14 =
  16. 16.46 + 79 + 36 + 75 =
  17. 17.59 + 12 + 23 + 65 =
  18. 18.60 + 40 + 89 + 43 =
  19. 19.79 + 50 + 12 + 23 =
  20. 20.26 + 19 + 23 + 86 =
  21. 21.77 + 49 + 27 + 57 =
  22. 22.21 + 35 + 83 + 60 =
  23. 23.41 + 22 + 63 + 15 =
  24. 24.57 + 23 + 76 + 13 =
  25. 25.50 + 18 + 68 + 75 =
  26. 26.18 + 26 + 81 + 55 =
  27. 27.33 + 15 + 83 + 76 =
  28. 28.56 + 73 + 41 + 75 =
  29. 29.18 + 18 + 43 + 11 =
  30. 30.37 + 39 + 51 + 64 =
  31. 31.36 + 73 + 40 + 53 =
  32. 32.39 + 72 + 60 + 89 =
  33. 33.56 + 45 + 33 + 53 =
  34. 34.51 + 16 + 89 + 83 =
  35. 35.23 + 25 + 17 + 74 =
  36. 36.58 + 11 + 15 + 62 =
  37. 37.19 + 78 + 34 + 11 =
  38. 38.50 + 28 + 37 + 68 =
  39. 39.81 + 11 + 27 + 71 =
  40. 40.28 + 32 + 89 + 28 =

Answer key

  1. 204
  2. 194
  3. 199
  4. 216
  5. 179
  6. 215
  7. 262
  8. 243
  9. 276
  10. 221
  11. 144
  12. 205
  13. 88
  14. 214
  15. 195
  16. 236
  17. 159
  18. 232
  19. 164
  20. 154
  21. 210
  22. 199
  23. 141
  24. 169
  25. 211
  26. 180
  27. 207
  28. 245
  29. 90
  30. 191
  31. 202
  32. 260
  33. 187
  34. 239
  35. 139
  36. 146
  37. 142
  38. 183
  39. 190
  40. 177

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