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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 10 · 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. 1.68 + 68 + 47 + 28 =
  2. 2.17 + 28 + 39 + 54 =
  3. 3.55 + 56 + 35 + 32 =
  4. 4.87 + 22 + 62 + 58 =
  5. 5.47 + 18 + 13 + 65 =
  6. 6.80 + 67 + 40 + 53 =
  7. 7.33 + 27 + 44 + 17 =
  8. 8.41 + 39 + 55 + 50 =
  9. 9.12 + 83 + 27 + 22 =
  10. 10.69 + 56 + 46 + 27 =
  11. 11.13 + 61 + 42 + 58 =
  12. 12.79 + 30 + 68 + 34 =
  13. 13.23 + 89 + 14 + 85 =
  14. 14.27 + 81 + 15 + 44 =
  15. 15.41 + 83 + 69 + 86 =
  16. 16.84 + 41 + 35 + 66 =
  17. 17.30 + 57 + 77 + 15 =
  18. 18.73 + 76 + 55 + 75 =
  19. 19.84 + 16 + 37 + 28 =
  20. 20.66 + 56 + 80 + 25 =
  21. 21.87 + 48 + 67 + 20 =
  22. 22.47 + 38 + 35 + 83 =
  23. 23.27 + 42 + 71 + 38 =
  24. 24.18 + 30 + 67 + 41 =
  25. 25.51 + 31 + 31 + 32 =
  26. 26.18 + 39 + 87 + 42 =
  27. 27.16 + 16 + 89 + 83 =
  28. 28.35 + 49 + 12 + 32 =
  29. 29.59 + 32 + 63 + 73 =
  30. 30.14 + 36 + 78 + 56 =
  31. 31.68 + 12 + 59 + 80 =
  32. 32.24 + 55 + 51 + 51 =
  33. 33.11 + 34 + 26 + 22 =
  34. 34.45 + 70 + 70 + 78 =
  35. 35.52 + 37 + 80 + 23 =
  36. 36.46 + 21 + 37 + 47 =
  37. 37.59 + 70 + 73 + 50 =
  38. 38.13 + 59 + 15 + 51 =
  39. 39.16 + 41 + 27 + 16 =
  40. 40.79 + 79 + 12 + 67 =

Answer key

  1. 211
  2. 138
  3. 178
  4. 229
  5. 143
  6. 240
  7. 121
  8. 185
  9. 144
  10. 198
  11. 174
  12. 211
  13. 211
  14. 167
  15. 279
  16. 226
  17. 179
  18. 279
  19. 165
  20. 227
  21. 222
  22. 203
  23. 178
  24. 156
  25. 145
  26. 186
  27. 204
  28. 128
  29. 227
  30. 184
  31. 219
  32. 181
  33. 93
  34. 263
  35. 192
  36. 151
  37. 252
  38. 138
  39. 100
  40. 237

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