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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 935 · 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. 1.40 + 64 + 63 + 59 =
  2. 2.87 + 72 + 15 + 85 =
  3. 3.13 + 74 + 85 + 26 =
  4. 4.72 + 46 + 66 + 66 =
  5. 5.72 + 14 + 70 + 45 =
  6. 6.52 + 27 + 88 + 18 =
  7. 7.33 + 71 + 51 + 40 =
  8. 8.18 + 15 + 80 + 84 =
  9. 9.57 + 24 + 54 + 28 =
  10. 10.77 + 52 + 61 + 36 =
  11. 11.84 + 81 + 63 + 25 =
  12. 12.87 + 73 + 86 + 22 =
  13. 13.66 + 47 + 49 + 36 =
  14. 14.36 + 67 + 75 + 29 =
  15. 15.27 + 62 + 39 + 66 =
  16. 16.51 + 48 + 40 + 13 =
  17. 17.14 + 13 + 30 + 62 =
  18. 18.58 + 85 + 44 + 23 =
  19. 19.72 + 24 + 11 + 78 =
  20. 20.68 + 31 + 12 + 14 =
  21. 21.32 + 27 + 66 + 72 =
  22. 22.27 + 49 + 41 + 74 =
  23. 23.19 + 32 + 85 + 71 =
  24. 24.60 + 53 + 24 + 11 =
  25. 25.12 + 78 + 85 + 59 =
  26. 26.76 + 82 + 46 + 19 =
  27. 27.11 + 11 + 37 + 63 =
  28. 28.26 + 21 + 44 + 61 =
  29. 29.65 + 87 + 12 + 75 =
  30. 30.31 + 81 + 21 + 11 =
  31. 31.63 + 63 + 89 + 26 =
  32. 32.61 + 49 + 29 + 87 =
  33. 33.28 + 49 + 75 + 74 =
  34. 34.61 + 34 + 50 + 69 =
  35. 35.83 + 35 + 24 + 42 =
  36. 36.36 + 35 + 17 + 25 =
  37. 37.89 + 84 + 27 + 11 =
  38. 38.88 + 79 + 67 + 38 =
  39. 39.49 + 33 + 20 + 71 =
  40. 40.17 + 11 + 54 + 66 =

Answer key

  1. 226
  2. 259
  3. 198
  4. 250
  5. 201
  6. 185
  7. 195
  8. 197
  9. 163
  10. 226
  11. 253
  12. 268
  13. 198
  14. 207
  15. 194
  16. 152
  17. 119
  18. 210
  19. 185
  20. 125
  21. 197
  22. 191
  23. 207
  24. 148
  25. 234
  26. 223
  27. 122
  28. 152
  29. 239
  30. 144
  31. 241
  32. 226
  33. 226
  34. 214
  35. 184
  36. 113
  37. 211
  38. 272
  39. 173
  40. 148

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