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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 606 · 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. 1.39 + 71 + 69 + 31 =
  2. 2.17 + 44 + 33 + 21 =
  3. 3.58 + 23 + 21 + 67 =
  4. 4.65 + 65 + 15 + 34 =
  5. 5.19 + 69 + 42 + 36 =
  6. 6.71 + 54 + 16 + 15 =
  7. 7.27 + 40 + 14 + 36 =
  8. 8.42 + 44 + 57 + 55 =
  9. 9.23 + 50 + 55 + 70 =
  10. 10.71 + 47 + 19 + 35 =
  11. 11.28 + 65 + 74 + 50 =
  12. 12.78 + 25 + 33 + 50 =
  13. 13.19 + 20 + 24 + 52 =
  14. 14.66 + 62 + 35 + 25 =
  15. 15.53 + 76 + 53 + 15 =
  16. 16.72 + 81 + 21 + 81 =
  17. 17.56 + 21 + 12 + 58 =
  18. 18.66 + 19 + 61 + 61 =
  19. 19.64 + 35 + 48 + 51 =
  20. 20.53 + 16 + 69 + 52 =
  21. 21.30 + 84 + 23 + 71 =
  22. 22.54 + 24 + 18 + 21 =
  23. 23.38 + 30 + 86 + 42 =
  24. 24.59 + 13 + 14 + 47 =
  25. 25.42 + 23 + 62 + 50 =
  26. 26.56 + 67 + 70 + 77 =
  27. 27.34 + 50 + 13 + 13 =
  28. 28.69 + 72 + 54 + 13 =
  29. 29.55 + 36 + 49 + 61 =
  30. 30.85 + 47 + 17 + 60 =
  31. 31.11 + 25 + 14 + 36 =
  32. 32.27 + 80 + 75 + 87 =
  33. 33.88 + 32 + 23 + 56 =
  34. 34.23 + 40 + 69 + 11 =
  35. 35.17 + 23 + 58 + 25 =
  36. 36.33 + 60 + 82 + 49 =
  37. 37.25 + 13 + 12 + 65 =
  38. 38.36 + 53 + 25 + 42 =
  39. 39.79 + 38 + 66 + 70 =
  40. 40.46 + 52 + 41 + 78 =

Answer key

  1. 210
  2. 115
  3. 169
  4. 179
  5. 166
  6. 156
  7. 117
  8. 198
  9. 198
  10. 172
  11. 217
  12. 186
  13. 115
  14. 188
  15. 197
  16. 255
  17. 147
  18. 207
  19. 198
  20. 190
  21. 208
  22. 117
  23. 196
  24. 133
  25. 177
  26. 270
  27. 110
  28. 208
  29. 201
  30. 209
  31. 86
  32. 269
  33. 199
  34. 143
  35. 123
  36. 224
  37. 115
  38. 156
  39. 253
  40. 217

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