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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 173 · 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. 1.19 + 57 + 87 + 27 =
  2. 2.70 + 53 + 21 + 57 =
  3. 3.74 + 86 + 74 + 82 =
  4. 4.50 + 42 + 77 + 50 =
  5. 5.28 + 43 + 28 + 16 =
  6. 6.41 + 25 + 45 + 56 =
  7. 7.37 + 29 + 30 + 89 =
  8. 8.56 + 60 + 87 + 62 =
  9. 9.14 + 14 + 39 + 48 =
  10. 10.19 + 25 + 17 + 76 =
  11. 11.45 + 82 + 79 + 62 =
  12. 12.74 + 37 + 89 + 29 =
  13. 13.25 + 44 + 73 + 55 =
  14. 14.70 + 55 + 75 + 45 =
  15. 15.30 + 43 + 71 + 53 =
  16. 16.40 + 87 + 45 + 28 =
  17. 17.33 + 47 + 29 + 81 =
  18. 18.19 + 19 + 19 + 63 =
  19. 19.26 + 28 + 27 + 70 =
  20. 20.42 + 76 + 29 + 34 =
  21. 21.29 + 44 + 48 + 75 =
  22. 22.32 + 85 + 44 + 64 =
  23. 23.14 + 16 + 71 + 18 =
  24. 24.80 + 28 + 18 + 74 =
  25. 25.54 + 14 + 56 + 30 =
  26. 26.17 + 38 + 32 + 38 =
  27. 27.79 + 76 + 17 + 11 =
  28. 28.15 + 31 + 78 + 35 =
  29. 29.29 + 38 + 13 + 57 =
  30. 30.49 + 11 + 45 + 41 =
  31. 31.24 + 76 + 43 + 16 =
  32. 32.78 + 58 + 82 + 34 =
  33. 33.23 + 76 + 78 + 30 =
  34. 34.89 + 23 + 80 + 42 =
  35. 35.80 + 77 + 27 + 11 =
  36. 36.11 + 42 + 16 + 12 =
  37. 37.13 + 48 + 39 + 43 =
  38. 38.14 + 48 + 12 + 57 =
  39. 39.52 + 41 + 73 + 28 =
  40. 40.27 + 36 + 89 + 79 =

Answer key

  1. 190
  2. 201
  3. 316
  4. 219
  5. 115
  6. 167
  7. 185
  8. 265
  9. 115
  10. 137
  11. 268
  12. 229
  13. 197
  14. 245
  15. 197
  16. 200
  17. 190
  18. 120
  19. 151
  20. 181
  21. 196
  22. 225
  23. 119
  24. 200
  25. 154
  26. 125
  27. 183
  28. 159
  29. 137
  30. 146
  31. 159
  32. 252
  33. 207
  34. 234
  35. 195
  36. 81
  37. 143
  38. 131
  39. 194
  40. 231

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