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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 966 · 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. 1.25 + 86 + 11 + 78 =
  2. 2.51 + 37 + 28 + 57 =
  3. 3.23 + 15 + 45 + 79 =
  4. 4.39 + 40 + 49 + 30 =
  5. 5.12 + 83 + 45 + 77 =
  6. 6.19 + 39 + 42 + 76 =
  7. 7.84 + 80 + 23 + 67 =
  8. 8.86 + 12 + 13 + 67 =
  9. 9.70 + 65 + 76 + 72 =
  10. 10.35 + 69 + 52 + 19 =
  11. 11.31 + 70 + 20 + 53 =
  12. 12.86 + 55 + 21 + 68 =
  13. 13.15 + 51 + 29 + 33 =
  14. 14.18 + 58 + 23 + 13 =
  15. 15.75 + 64 + 40 + 21 =
  16. 16.52 + 53 + 19 + 87 =
  17. 17.23 + 38 + 69 + 32 =
  18. 18.15 + 43 + 23 + 12 =
  19. 19.25 + 37 + 57 + 53 =
  20. 20.73 + 85 + 35 + 76 =
  21. 21.84 + 48 + 11 + 45 =
  22. 22.42 + 26 + 29 + 71 =
  23. 23.27 + 74 + 55 + 30 =
  24. 24.58 + 70 + 37 + 36 =
  25. 25.28 + 63 + 25 + 34 =
  26. 26.30 + 50 + 27 + 33 =
  27. 27.28 + 82 + 54 + 51 =
  28. 28.25 + 75 + 65 + 45 =
  29. 29.68 + 11 + 62 + 19 =
  30. 30.36 + 51 + 21 + 42 =
  31. 31.88 + 12 + 33 + 71 =
  32. 32.11 + 15 + 75 + 77 =
  33. 33.78 + 67 + 43 + 42 =
  34. 34.20 + 56 + 82 + 44 =
  35. 35.38 + 41 + 88 + 29 =
  36. 36.58 + 54 + 33 + 85 =
  37. 37.70 + 16 + 13 + 80 =
  38. 38.26 + 38 + 70 + 36 =
  39. 39.20 + 86 + 19 + 75 =
  40. 40.13 + 49 + 56 + 82 =

Answer key

  1. 200
  2. 173
  3. 162
  4. 158
  5. 217
  6. 176
  7. 254
  8. 178
  9. 283
  10. 175
  11. 174
  12. 230
  13. 128
  14. 112
  15. 200
  16. 211
  17. 162
  18. 93
  19. 172
  20. 269
  21. 188
  22. 168
  23. 186
  24. 201
  25. 150
  26. 140
  27. 215
  28. 210
  29. 160
  30. 150
  31. 204
  32. 178
  33. 230
  34. 202
  35. 196
  36. 230
  37. 179
  38. 170
  39. 200
  40. 200

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