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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 534 · 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. 1.84 + 89 + 71 + 45 =
  2. 2.35 + 59 + 47 + 13 =
  3. 3.28 + 73 + 29 + 16 =
  4. 4.13 + 70 + 20 + 13 =
  5. 5.66 + 45 + 18 + 16 =
  6. 6.89 + 34 + 77 + 19 =
  7. 7.67 + 23 + 36 + 76 =
  8. 8.30 + 20 + 22 + 18 =
  9. 9.87 + 24 + 32 + 59 =
  10. 10.85 + 45 + 67 + 84 =
  11. 11.39 + 33 + 50 + 23 =
  12. 12.26 + 33 + 44 + 45 =
  13. 13.61 + 18 + 12 + 47 =
  14. 14.31 + 31 + 76 + 26 =
  15. 15.70 + 59 + 20 + 63 =
  16. 16.84 + 72 + 11 + 26 =
  17. 17.32 + 88 + 20 + 35 =
  18. 18.31 + 66 + 28 + 45 =
  19. 19.29 + 50 + 40 + 54 =
  20. 20.45 + 69 + 55 + 55 =
  21. 21.34 + 54 + 68 + 45 =
  22. 22.25 + 63 + 13 + 46 =
  23. 23.70 + 14 + 19 + 36 =
  24. 24.21 + 30 + 38 + 26 =
  25. 25.14 + 40 + 52 + 65 =
  26. 26.65 + 63 + 67 + 54 =
  27. 27.57 + 24 + 83 + 41 =
  28. 28.36 + 78 + 31 + 79 =
  29. 29.29 + 53 + 60 + 14 =
  30. 30.26 + 39 + 24 + 30 =
  31. 31.46 + 20 + 62 + 12 =
  32. 32.36 + 18 + 74 + 61 =
  33. 33.23 + 37 + 49 + 33 =
  34. 34.73 + 80 + 87 + 53 =
  35. 35.30 + 47 + 85 + 20 =
  36. 36.49 + 23 + 41 + 38 =
  37. 37.60 + 21 + 14 + 46 =
  38. 38.18 + 19 + 83 + 50 =
  39. 39.29 + 45 + 82 + 38 =
  40. 40.40 + 33 + 44 + 63 =

Answer key

  1. 289
  2. 154
  3. 146
  4. 116
  5. 145
  6. 219
  7. 202
  8. 90
  9. 202
  10. 281
  11. 145
  12. 148
  13. 138
  14. 164
  15. 212
  16. 193
  17. 175
  18. 170
  19. 173
  20. 224
  21. 201
  22. 147
  23. 139
  24. 115
  25. 171
  26. 249
  27. 205
  28. 224
  29. 156
  30. 119
  31. 140
  32. 189
  33. 142
  34. 293
  35. 182
  36. 151
  37. 141
  38. 170
  39. 194
  40. 180

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