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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 922 · 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. 1.36 + 65 + 53 + 15 =
  2. 2.88 + 85 + 70 + 55 =
  3. 3.51 + 12 + 60 + 84 =
  4. 4.50 + 22 + 11 + 14 =
  5. 5.14 + 25 + 16 + 83 =
  6. 6.36 + 80 + 55 + 30 =
  7. 7.29 + 57 + 41 + 57 =
  8. 8.57 + 83 + 72 + 53 =
  9. 9.81 + 73 + 27 + 33 =
  10. 10.51 + 28 + 78 + 27 =
  11. 11.85 + 55 + 37 + 55 =
  12. 12.13 + 58 + 38 + 31 =
  13. 13.13 + 25 + 69 + 35 =
  14. 14.37 + 17 + 63 + 34 =
  15. 15.28 + 37 + 16 + 80 =
  16. 16.49 + 84 + 51 + 56 =
  17. 17.11 + 87 + 15 + 39 =
  18. 18.38 + 51 + 45 + 81 =
  19. 19.81 + 74 + 79 + 72 =
  20. 20.20 + 34 + 16 + 81 =
  21. 21.88 + 40 + 58 + 72 =
  22. 22.72 + 52 + 44 + 29 =
  23. 23.52 + 57 + 35 + 57 =
  24. 24.89 + 67 + 89 + 75 =
  25. 25.44 + 13 + 27 + 56 =
  26. 26.64 + 76 + 45 + 80 =
  27. 27.50 + 62 + 54 + 17 =
  28. 28.36 + 29 + 53 + 11 =
  29. 29.30 + 51 + 52 + 56 =
  30. 30.36 + 23 + 78 + 32 =
  31. 31.33 + 57 + 89 + 58 =
  32. 32.47 + 28 + 35 + 12 =
  33. 33.53 + 87 + 30 + 64 =
  34. 34.12 + 58 + 19 + 50 =
  35. 35.84 + 61 + 46 + 79 =
  36. 36.16 + 80 + 34 + 30 =
  37. 37.17 + 54 + 20 + 56 =
  38. 38.78 + 39 + 48 + 74 =
  39. 39.60 + 86 + 83 + 83 =
  40. 40.15 + 66 + 27 + 67 =

Answer key

  1. 169
  2. 298
  3. 207
  4. 97
  5. 138
  6. 201
  7. 184
  8. 265
  9. 214
  10. 184
  11. 232
  12. 140
  13. 142
  14. 151
  15. 161
  16. 240
  17. 152
  18. 215
  19. 306
  20. 151
  21. 258
  22. 197
  23. 201
  24. 320
  25. 140
  26. 265
  27. 183
  28. 129
  29. 189
  30. 169
  31. 237
  32. 122
  33. 234
  34. 139
  35. 270
  36. 160
  37. 147
  38. 239
  39. 312
  40. 175

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