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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 719 · 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. 1.63 + 87 + 52 + 33 =
  2. 2.81 + 56 + 19 + 24 =
  3. 3.65 + 84 + 17 + 27 =
  4. 4.37 + 26 + 79 + 82 =
  5. 5.85 + 87 + 63 + 66 =
  6. 6.86 + 83 + 51 + 42 =
  7. 7.17 + 60 + 74 + 61 =
  8. 8.66 + 79 + 80 + 46 =
  9. 9.42 + 54 + 14 + 26 =
  10. 10.71 + 20 + 69 + 27 =
  11. 11.18 + 61 + 29 + 50 =
  12. 12.60 + 12 + 31 + 64 =
  13. 13.53 + 87 + 45 + 28 =
  14. 14.76 + 75 + 14 + 72 =
  15. 15.41 + 18 + 86 + 69 =
  16. 16.13 + 37 + 42 + 21 =
  17. 17.79 + 49 + 42 + 17 =
  18. 18.39 + 27 + 82 + 58 =
  19. 19.89 + 50 + 65 + 46 =
  20. 20.83 + 65 + 21 + 65 =
  21. 21.75 + 84 + 29 + 18 =
  22. 22.42 + 72 + 49 + 13 =
  23. 23.53 + 11 + 28 + 33 =
  24. 24.79 + 55 + 34 + 69 =
  25. 25.80 + 13 + 53 + 88 =
  26. 26.32 + 20 + 49 + 62 =
  27. 27.88 + 27 + 21 + 29 =
  28. 28.49 + 51 + 33 + 68 =
  29. 29.14 + 43 + 70 + 77 =
  30. 30.21 + 22 + 24 + 29 =
  31. 31.68 + 24 + 17 + 14 =
  32. 32.58 + 63 + 60 + 29 =
  33. 33.78 + 82 + 32 + 72 =
  34. 34.59 + 45 + 14 + 37 =
  35. 35.14 + 33 + 66 + 14 =
  36. 36.61 + 81 + 29 + 55 =
  37. 37.50 + 67 + 46 + 46 =
  38. 38.18 + 22 + 64 + 88 =
  39. 39.49 + 57 + 45 + 30 =
  40. 40.80 + 41 + 61 + 54 =

Answer key

  1. 235
  2. 180
  3. 193
  4. 224
  5. 301
  6. 262
  7. 212
  8. 271
  9. 136
  10. 187
  11. 158
  12. 167
  13. 213
  14. 237
  15. 214
  16. 113
  17. 187
  18. 206
  19. 250
  20. 234
  21. 206
  22. 176
  23. 125
  24. 237
  25. 234
  26. 163
  27. 165
  28. 201
  29. 204
  30. 96
  31. 123
  32. 210
  33. 264
  34. 155
  35. 127
  36. 226
  37. 209
  38. 192
  39. 181
  40. 236

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