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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 854 · 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. 1.23 + 33 + 44 + 16 =
  2. 2.68 + 56 + 24 + 64 =
  3. 3.63 + 53 + 41 + 72 =
  4. 4.71 + 35 + 46 + 62 =
  5. 5.13 + 76 + 88 + 47 =
  6. 6.34 + 57 + 57 + 63 =
  7. 7.39 + 50 + 78 + 14 =
  8. 8.50 + 52 + 58 + 56 =
  9. 9.40 + 58 + 65 + 16 =
  10. 10.37 + 89 + 43 + 24 =
  11. 11.22 + 83 + 60 + 72 =
  12. 12.22 + 84 + 64 + 30 =
  13. 13.23 + 89 + 20 + 82 =
  14. 14.66 + 54 + 66 + 30 =
  15. 15.77 + 39 + 21 + 28 =
  16. 16.18 + 45 + 62 + 49 =
  17. 17.88 + 75 + 84 + 80 =
  18. 18.64 + 79 + 84 + 42 =
  19. 19.79 + 47 + 78 + 76 =
  20. 20.22 + 54 + 35 + 57 =
  21. 21.30 + 40 + 35 + 62 =
  22. 22.61 + 29 + 78 + 12 =
  23. 23.77 + 50 + 83 + 11 =
  24. 24.85 + 69 + 85 + 22 =
  25. 25.40 + 85 + 77 + 25 =
  26. 26.16 + 25 + 50 + 82 =
  27. 27.11 + 50 + 39 + 16 =
  28. 28.81 + 57 + 85 + 26 =
  29. 29.51 + 39 + 24 + 28 =
  30. 30.69 + 74 + 34 + 55 =
  31. 31.69 + 14 + 31 + 31 =
  32. 32.35 + 16 + 60 + 32 =
  33. 33.50 + 64 + 44 + 27 =
  34. 34.76 + 56 + 28 + 60 =
  35. 35.30 + 86 + 32 + 68 =
  36. 36.52 + 59 + 41 + 48 =
  37. 37.25 + 12 + 89 + 41 =
  38. 38.79 + 40 + 25 + 34 =
  39. 39.60 + 26 + 23 + 28 =
  40. 40.67 + 74 + 13 + 12 =

Answer key

  1. 116
  2. 212
  3. 229
  4. 214
  5. 224
  6. 211
  7. 181
  8. 216
  9. 179
  10. 193
  11. 237
  12. 200
  13. 214
  14. 216
  15. 165
  16. 174
  17. 327
  18. 269
  19. 280
  20. 168
  21. 167
  22. 180
  23. 221
  24. 261
  25. 227
  26. 173
  27. 116
  28. 249
  29. 142
  30. 232
  31. 145
  32. 143
  33. 185
  34. 220
  35. 216
  36. 200
  37. 167
  38. 178
  39. 137
  40. 166

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