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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 953 · 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. 1.28 + 23 + 73 + 68 =
  2. 2.29 + 65 + 64 + 37 =
  3. 3.72 + 44 + 38 + 13 =
  4. 4.57 + 22 + 29 + 31 =
  5. 5.28 + 51 + 19 + 82 =
  6. 6.56 + 58 + 18 + 84 =
  7. 7.40 + 38 + 47 + 28 =
  8. 8.46 + 36 + 85 + 11 =
  9. 9.16 + 34 + 29 + 26 =
  10. 10.47 + 78 + 55 + 74 =
  11. 11.76 + 37 + 23 + 42 =
  12. 12.46 + 82 + 87 + 81 =
  13. 13.11 + 77 + 46 + 29 =
  14. 14.50 + 89 + 16 + 84 =
  15. 15.66 + 20 + 45 + 54 =
  16. 16.45 + 45 + 23 + 16 =
  17. 17.25 + 18 + 56 + 83 =
  18. 18.60 + 60 + 20 + 15 =
  19. 19.51 + 73 + 29 + 62 =
  20. 20.75 + 43 + 56 + 80 =
  21. 21.45 + 11 + 89 + 58 =
  22. 22.11 + 57 + 77 + 19 =
  23. 23.71 + 49 + 51 + 67 =
  24. 24.34 + 46 + 11 + 11 =
  25. 25.12 + 44 + 21 + 84 =
  26. 26.63 + 20 + 21 + 79 =
  27. 27.22 + 28 + 17 + 31 =
  28. 28.34 + 89 + 77 + 26 =
  29. 29.26 + 44 + 64 + 39 =
  30. 30.70 + 27 + 27 + 70 =
  31. 31.70 + 19 + 18 + 26 =
  32. 32.25 + 44 + 76 + 35 =
  33. 33.29 + 19 + 80 + 72 =
  34. 34.26 + 48 + 36 + 20 =
  35. 35.74 + 51 + 43 + 85 =
  36. 36.59 + 47 + 84 + 42 =
  37. 37.12 + 61 + 37 + 61 =
  38. 38.16 + 63 + 49 + 21 =
  39. 39.30 + 14 + 12 + 38 =
  40. 40.37 + 31 + 41 + 72 =

Answer key

  1. 192
  2. 195
  3. 167
  4. 139
  5. 180
  6. 216
  7. 153
  8. 178
  9. 105
  10. 254
  11. 178
  12. 296
  13. 163
  14. 239
  15. 185
  16. 129
  17. 182
  18. 155
  19. 215
  20. 254
  21. 203
  22. 164
  23. 238
  24. 102
  25. 161
  26. 183
  27. 98
  28. 226
  29. 173
  30. 194
  31. 133
  32. 180
  33. 200
  34. 130
  35. 253
  36. 232
  37. 171
  38. 149
  39. 94
  40. 181

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