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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 924 · 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. 1.35 + 69 + 64 + 32 =
  2. 2.77 + 28 + 18 + 22 =
  3. 3.70 + 74 + 67 + 66 =
  4. 4.37 + 64 + 26 + 70 =
  5. 5.32 + 81 + 29 + 76 =
  6. 6.43 + 21 + 54 + 46 =
  7. 7.71 + 61 + 46 + 18 =
  8. 8.54 + 26 + 50 + 15 =
  9. 9.42 + 80 + 49 + 29 =
  10. 10.83 + 45 + 22 + 25 =
  11. 11.80 + 50 + 18 + 41 =
  12. 12.43 + 24 + 74 + 18 =
  13. 13.88 + 27 + 77 + 47 =
  14. 14.34 + 89 + 27 + 59 =
  15. 15.24 + 18 + 63 + 20 =
  16. 16.82 + 64 + 38 + 49 =
  17. 17.29 + 85 + 63 + 63 =
  18. 18.82 + 80 + 66 + 78 =
  19. 19.25 + 14 + 48 + 54 =
  20. 20.47 + 57 + 18 + 87 =
  21. 21.25 + 30 + 81 + 60 =
  22. 22.26 + 55 + 67 + 37 =
  23. 23.81 + 84 + 20 + 51 =
  24. 24.36 + 84 + 88 + 66 =
  25. 25.17 + 19 + 59 + 27 =
  26. 26.61 + 19 + 58 + 60 =
  27. 27.78 + 68 + 47 + 62 =
  28. 28.74 + 12 + 66 + 87 =
  29. 29.13 + 79 + 51 + 84 =
  30. 30.26 + 16 + 15 + 55 =
  31. 31.85 + 13 + 61 + 88 =
  32. 32.23 + 36 + 36 + 14 =
  33. 33.25 + 59 + 25 + 20 =
  34. 34.31 + 20 + 86 + 88 =
  35. 35.35 + 15 + 44 + 18 =
  36. 36.15 + 38 + 60 + 55 =
  37. 37.49 + 30 + 25 + 56 =
  38. 38.34 + 51 + 60 + 20 =
  39. 39.79 + 51 + 18 + 27 =
  40. 40.81 + 60 + 89 + 75 =

Answer key

  1. 200
  2. 145
  3. 277
  4. 197
  5. 218
  6. 164
  7. 196
  8. 145
  9. 200
  10. 175
  11. 189
  12. 159
  13. 239
  14. 209
  15. 125
  16. 233
  17. 240
  18. 306
  19. 141
  20. 209
  21. 196
  22. 185
  23. 236
  24. 274
  25. 122
  26. 198
  27. 255
  28. 239
  29. 227
  30. 112
  31. 247
  32. 109
  33. 129
  34. 225
  35. 112
  36. 168
  37. 160
  38. 165
  39. 175
  40. 305

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