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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 339 · 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. 1.27 + 30 + 75 + 46 =
  2. 2.66 + 79 + 37 + 57 =
  3. 3.22 + 11 + 53 + 39 =
  4. 4.49 + 73 + 45 + 60 =
  5. 5.15 + 51 + 81 + 63 =
  6. 6.84 + 38 + 86 + 53 =
  7. 7.55 + 68 + 18 + 86 =
  8. 8.41 + 17 + 51 + 36 =
  9. 9.18 + 75 + 25 + 24 =
  10. 10.80 + 67 + 80 + 54 =
  11. 11.38 + 32 + 44 + 63 =
  12. 12.66 + 20 + 26 + 29 =
  13. 13.70 + 14 + 41 + 24 =
  14. 14.25 + 14 + 86 + 30 =
  15. 15.41 + 57 + 58 + 81 =
  16. 16.40 + 47 + 70 + 40 =
  17. 17.50 + 82 + 32 + 28 =
  18. 18.44 + 20 + 60 + 17 =
  19. 19.77 + 42 + 51 + 13 =
  20. 20.32 + 17 + 36 + 30 =
  21. 21.39 + 14 + 48 + 23 =
  22. 22.29 + 72 + 53 + 17 =
  23. 23.11 + 15 + 30 + 83 =
  24. 24.33 + 25 + 32 + 33 =
  25. 25.30 + 33 + 78 + 23 =
  26. 26.55 + 39 + 14 + 13 =
  27. 27.78 + 62 + 72 + 63 =
  28. 28.23 + 23 + 20 + 42 =
  29. 29.28 + 71 + 35 + 16 =
  30. 30.76 + 70 + 12 + 17 =
  31. 31.67 + 66 + 11 + 61 =
  32. 32.81 + 64 + 53 + 45 =
  33. 33.50 + 66 + 18 + 29 =
  34. 34.13 + 72 + 58 + 57 =
  35. 35.68 + 13 + 24 + 15 =
  36. 36.17 + 79 + 30 + 45 =
  37. 37.14 + 74 + 74 + 46 =
  38. 38.56 + 33 + 20 + 65 =
  39. 39.43 + 57 + 69 + 89 =
  40. 40.28 + 88 + 75 + 59 =

Answer key

  1. 178
  2. 239
  3. 125
  4. 227
  5. 210
  6. 261
  7. 227
  8. 145
  9. 142
  10. 281
  11. 177
  12. 141
  13. 149
  14. 155
  15. 237
  16. 197
  17. 192
  18. 141
  19. 183
  20. 115
  21. 124
  22. 171
  23. 139
  24. 123
  25. 164
  26. 121
  27. 275
  28. 108
  29. 150
  30. 175
  31. 205
  32. 243
  33. 163
  34. 200
  35. 120
  36. 171
  37. 208
  38. 174
  39. 258
  40. 250

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