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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 429 · 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. 1.58 + 50 + 65 + 87 =
  2. 2.28 + 33 + 25 + 22 =
  3. 3.34 + 82 + 15 + 23 =
  4. 4.14 + 55 + 25 + 24 =
  5. 5.57 + 15 + 38 + 71 =
  6. 6.82 + 73 + 25 + 34 =
  7. 7.51 + 24 + 38 + 18 =
  8. 8.56 + 26 + 21 + 23 =
  9. 9.70 + 21 + 52 + 29 =
  10. 10.77 + 45 + 17 + 17 =
  11. 11.23 + 48 + 81 + 11 =
  12. 12.13 + 53 + 87 + 60 =
  13. 13.27 + 65 + 63 + 63 =
  14. 14.24 + 19 + 67 + 28 =
  15. 15.28 + 81 + 31 + 80 =
  16. 16.28 + 43 + 28 + 51 =
  17. 17.44 + 21 + 28 + 83 =
  18. 18.83 + 53 + 23 + 51 =
  19. 19.29 + 85 + 21 + 30 =
  20. 20.61 + 34 + 17 + 85 =
  21. 21.63 + 14 + 66 + 37 =
  22. 22.27 + 25 + 55 + 28 =
  23. 23.89 + 75 + 15 + 44 =
  24. 24.47 + 15 + 39 + 78 =
  25. 25.45 + 81 + 29 + 25 =
  26. 26.13 + 42 + 34 + 20 =
  27. 27.39 + 40 + 22 + 55 =
  28. 28.78 + 80 + 58 + 78 =
  29. 29.43 + 16 + 43 + 17 =
  30. 30.56 + 64 + 27 + 22 =
  31. 31.22 + 77 + 45 + 42 =
  32. 32.61 + 29 + 44 + 85 =
  33. 33.31 + 87 + 25 + 18 =
  34. 34.29 + 60 + 34 + 32 =
  35. 35.30 + 46 + 56 + 56 =
  36. 36.76 + 17 + 73 + 44 =
  37. 37.19 + 80 + 70 + 50 =
  38. 38.57 + 70 + 53 + 45 =
  39. 39.34 + 64 + 44 + 31 =
  40. 40.54 + 22 + 35 + 81 =

Answer key

  1. 260
  2. 108
  3. 154
  4. 118
  5. 181
  6. 214
  7. 131
  8. 126
  9. 172
  10. 156
  11. 163
  12. 213
  13. 218
  14. 138
  15. 220
  16. 150
  17. 176
  18. 210
  19. 165
  20. 197
  21. 180
  22. 135
  23. 223
  24. 179
  25. 180
  26. 109
  27. 156
  28. 294
  29. 119
  30. 169
  31. 186
  32. 219
  33. 161
  34. 155
  35. 188
  36. 210
  37. 219
  38. 225
  39. 173
  40. 192

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