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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 59 · 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. 1.59 + 24 + 46 + 49 =
  2. 2.26 + 32 + 80 + 57 =
  3. 3.89 + 43 + 26 + 32 =
  4. 4.14 + 53 + 76 + 44 =
  5. 5.32 + 31 + 76 + 22 =
  6. 6.41 + 63 + 17 + 15 =
  7. 7.41 + 22 + 76 + 11 =
  8. 8.62 + 22 + 70 + 71 =
  9. 9.50 + 23 + 71 + 55 =
  10. 10.72 + 84 + 70 + 51 =
  11. 11.22 + 44 + 80 + 19 =
  12. 12.19 + 32 + 30 + 30 =
  13. 13.11 + 85 + 12 + 44 =
  14. 14.58 + 86 + 24 + 35 =
  15. 15.54 + 21 + 26 + 27 =
  16. 16.64 + 20 + 27 + 62 =
  17. 17.11 + 55 + 67 + 45 =
  18. 18.29 + 52 + 59 + 15 =
  19. 19.24 + 73 + 86 + 20 =
  20. 20.18 + 53 + 17 + 26 =
  21. 21.75 + 37 + 76 + 28 =
  22. 22.30 + 77 + 17 + 61 =
  23. 23.69 + 45 + 32 + 11 =
  24. 24.40 + 64 + 27 + 29 =
  25. 25.78 + 58 + 67 + 41 =
  26. 26.14 + 86 + 53 + 83 =
  27. 27.51 + 69 + 24 + 54 =
  28. 28.12 + 29 + 26 + 55 =
  29. 29.82 + 73 + 26 + 13 =
  30. 30.63 + 39 + 42 + 67 =
  31. 31.65 + 16 + 61 + 23 =
  32. 32.43 + 57 + 88 + 77 =
  33. 33.26 + 20 + 60 + 12 =
  34. 34.60 + 33 + 78 + 15 =
  35. 35.36 + 45 + 84 + 34 =
  36. 36.41 + 20 + 65 + 33 =
  37. 37.82 + 27 + 58 + 12 =
  38. 38.14 + 85 + 13 + 41 =
  39. 39.85 + 11 + 88 + 87 =
  40. 40.24 + 57 + 82 + 47 =

Answer key

  1. 178
  2. 195
  3. 190
  4. 187
  5. 161
  6. 136
  7. 150
  8. 225
  9. 199
  10. 277
  11. 165
  12. 111
  13. 152
  14. 203
  15. 128
  16. 173
  17. 178
  18. 155
  19. 203
  20. 114
  21. 216
  22. 185
  23. 157
  24. 160
  25. 244
  26. 236
  27. 198
  28. 122
  29. 194
  30. 211
  31. 165
  32. 265
  33. 118
  34. 186
  35. 199
  36. 159
  37. 179
  38. 153
  39. 271
  40. 210

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