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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 886 · 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. 1.76 + 44 + 88 + 84 =
  2. 2.70 + 44 + 27 + 41 =
  3. 3.45 + 43 + 84 + 67 =
  4. 4.36 + 22 + 78 + 51 =
  5. 5.30 + 43 + 53 + 17 =
  6. 6.31 + 68 + 84 + 27 =
  7. 7.48 + 89 + 55 + 50 =
  8. 8.60 + 29 + 16 + 49 =
  9. 9.29 + 67 + 13 + 83 =
  10. 10.39 + 23 + 67 + 80 =
  11. 11.66 + 27 + 58 + 70 =
  12. 12.24 + 89 + 29 + 83 =
  13. 13.62 + 43 + 67 + 27 =
  14. 14.14 + 77 + 49 + 46 =
  15. 15.26 + 74 + 12 + 44 =
  16. 16.25 + 19 + 81 + 56 =
  17. 17.12 + 26 + 23 + 20 =
  18. 18.17 + 50 + 44 + 63 =
  19. 19.83 + 12 + 16 + 76 =
  20. 20.30 + 70 + 29 + 67 =
  21. 21.74 + 29 + 16 + 67 =
  22. 22.12 + 16 + 54 + 82 =
  23. 23.47 + 61 + 15 + 51 =
  24. 24.84 + 77 + 59 + 66 =
  25. 25.85 + 59 + 50 + 49 =
  26. 26.16 + 77 + 56 + 22 =
  27. 27.23 + 79 + 79 + 71 =
  28. 28.86 + 86 + 29 + 25 =
  29. 29.44 + 83 + 74 + 12 =
  30. 30.25 + 18 + 49 + 84 =
  31. 31.46 + 65 + 26 + 41 =
  32. 32.62 + 74 + 58 + 16 =
  33. 33.14 + 85 + 20 + 11 =
  34. 34.18 + 21 + 45 + 16 =
  35. 35.35 + 70 + 70 + 81 =
  36. 36.87 + 43 + 14 + 74 =
  37. 37.13 + 63 + 75 + 81 =
  38. 38.26 + 22 + 14 + 71 =
  39. 39.53 + 45 + 52 + 67 =
  40. 40.81 + 15 + 18 + 32 =

Answer key

  1. 292
  2. 182
  3. 239
  4. 187
  5. 143
  6. 210
  7. 242
  8. 154
  9. 192
  10. 209
  11. 221
  12. 225
  13. 199
  14. 186
  15. 156
  16. 181
  17. 81
  18. 174
  19. 187
  20. 196
  21. 186
  22. 164
  23. 174
  24. 286
  25. 243
  26. 171
  27. 252
  28. 226
  29. 213
  30. 176
  31. 178
  32. 210
  33. 130
  34. 100
  35. 256
  36. 218
  37. 232
  38. 133
  39. 217
  40. 146

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