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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 196 · 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. 1.12 + 30 + 18 + 75 =
  2. 2.68 + 67 + 13 + 76 =
  3. 3.48 + 68 + 26 + 15 =
  4. 4.33 + 33 + 20 + 23 =
  5. 5.26 + 13 + 78 + 83 =
  6. 6.68 + 68 + 21 + 87 =
  7. 7.33 + 75 + 16 + 60 =
  8. 8.29 + 72 + 81 + 55 =
  9. 9.56 + 33 + 29 + 67 =
  10. 10.39 + 38 + 60 + 36 =
  11. 11.43 + 73 + 66 + 78 =
  12. 12.80 + 43 + 79 + 40 =
  13. 13.23 + 55 + 21 + 17 =
  14. 14.79 + 15 + 17 + 79 =
  15. 15.46 + 63 + 51 + 73 =
  16. 16.54 + 47 + 74 + 38 =
  17. 17.35 + 74 + 51 + 73 =
  18. 18.60 + 26 + 56 + 25 =
  19. 19.15 + 87 + 72 + 56 =
  20. 20.71 + 14 + 59 + 12 =
  21. 21.73 + 71 + 50 + 20 =
  22. 22.54 + 30 + 47 + 27 =
  23. 23.67 + 80 + 83 + 64 =
  24. 24.71 + 19 + 25 + 33 =
  25. 25.22 + 87 + 86 + 68 =
  26. 26.29 + 32 + 27 + 12 =
  27. 27.88 + 30 + 36 + 65 =
  28. 28.84 + 53 + 16 + 35 =
  29. 29.22 + 25 + 15 + 43 =
  30. 30.29 + 20 + 69 + 21 =
  31. 31.33 + 14 + 28 + 42 =
  32. 32.55 + 57 + 86 + 71 =
  33. 33.82 + 63 + 29 + 49 =
  34. 34.14 + 14 + 30 + 24 =
  35. 35.39 + 87 + 24 + 43 =
  36. 36.86 + 31 + 48 + 65 =
  37. 37.20 + 25 + 76 + 38 =
  38. 38.35 + 51 + 19 + 72 =
  39. 39.67 + 62 + 68 + 14 =
  40. 40.48 + 36 + 78 + 76 =

Answer key

  1. 135
  2. 224
  3. 157
  4. 109
  5. 200
  6. 244
  7. 184
  8. 237
  9. 185
  10. 173
  11. 260
  12. 242
  13. 116
  14. 190
  15. 233
  16. 213
  17. 233
  18. 167
  19. 230
  20. 156
  21. 214
  22. 158
  23. 294
  24. 148
  25. 263
  26. 100
  27. 219
  28. 188
  29. 105
  30. 139
  31. 117
  32. 269
  33. 223
  34. 82
  35. 193
  36. 230
  37. 159
  38. 177
  39. 211
  40. 238

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