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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 958 · 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. 1.32 + 59 + 64 + 72 =
  2. 2.39 + 42 + 25 + 56 =
  3. 3.16 + 31 + 73 + 22 =
  4. 4.39 + 69 + 76 + 15 =
  5. 5.28 + 20 + 12 + 63 =
  6. 6.24 + 31 + 47 + 46 =
  7. 7.67 + 23 + 11 + 82 =
  8. 8.82 + 15 + 33 + 89 =
  9. 9.25 + 74 + 73 + 19 =
  10. 10.86 + 67 + 59 + 82 =
  11. 11.66 + 32 + 19 + 41 =
  12. 12.73 + 30 + 79 + 15 =
  13. 13.44 + 25 + 71 + 24 =
  14. 14.42 + 71 + 75 + 85 =
  15. 15.62 + 56 + 76 + 33 =
  16. 16.88 + 55 + 72 + 24 =
  17. 17.65 + 79 + 30 + 47 =
  18. 18.17 + 47 + 67 + 59 =
  19. 19.16 + 50 + 77 + 82 =
  20. 20.30 + 31 + 47 + 28 =
  21. 21.38 + 19 + 60 + 71 =
  22. 22.81 + 80 + 70 + 22 =
  23. 23.40 + 33 + 35 + 13 =
  24. 24.52 + 31 + 80 + 45 =
  25. 25.45 + 67 + 56 + 62 =
  26. 26.52 + 82 + 79 + 11 =
  27. 27.73 + 78 + 61 + 32 =
  28. 28.38 + 78 + 35 + 18 =
  29. 29.32 + 80 + 76 + 85 =
  30. 30.54 + 75 + 31 + 26 =
  31. 31.75 + 50 + 22 + 87 =
  32. 32.13 + 59 + 42 + 16 =
  33. 33.44 + 29 + 34 + 81 =
  34. 34.28 + 32 + 75 + 80 =
  35. 35.68 + 59 + 44 + 67 =
  36. 36.53 + 70 + 85 + 54 =
  37. 37.43 + 60 + 81 + 65 =
  38. 38.83 + 39 + 39 + 66 =
  39. 39.41 + 58 + 47 + 89 =
  40. 40.66 + 47 + 29 + 29 =

Answer key

  1. 227
  2. 162
  3. 142
  4. 199
  5. 123
  6. 148
  7. 183
  8. 219
  9. 191
  10. 294
  11. 158
  12. 197
  13. 164
  14. 273
  15. 227
  16. 239
  17. 221
  18. 190
  19. 225
  20. 136
  21. 188
  22. 253
  23. 121
  24. 208
  25. 230
  26. 224
  27. 244
  28. 169
  29. 273
  30. 186
  31. 234
  32. 130
  33. 188
  34. 215
  35. 238
  36. 262
  37. 249
  38. 227
  39. 235
  40. 171

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