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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 897 · 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 + 16 + 60 + 59 =
  2. 2.50 + 15 + 14 + 65 =
  3. 3.79 + 87 + 66 + 74 =
  4. 4.65 + 30 + 87 + 70 =
  5. 5.88 + 46 + 28 + 27 =
  6. 6.24 + 31 + 57 + 79 =
  7. 7.17 + 86 + 47 + 16 =
  8. 8.20 + 52 + 13 + 55 =
  9. 9.76 + 73 + 36 + 65 =
  10. 10.47 + 52 + 11 + 23 =
  11. 11.20 + 57 + 82 + 31 =
  12. 12.86 + 63 + 78 + 49 =
  13. 13.23 + 41 + 38 + 38 =
  14. 14.77 + 17 + 25 + 46 =
  15. 15.18 + 71 + 40 + 60 =
  16. 16.50 + 19 + 72 + 41 =
  17. 17.62 + 36 + 32 + 54 =
  18. 18.56 + 47 + 58 + 41 =
  19. 19.78 + 55 + 40 + 66 =
  20. 20.78 + 73 + 40 + 52 =
  21. 21.81 + 79 + 30 + 27 =
  22. 22.45 + 41 + 50 + 36 =
  23. 23.75 + 20 + 53 + 40 =
  24. 24.63 + 59 + 41 + 77 =
  25. 25.29 + 57 + 38 + 27 =
  26. 26.68 + 62 + 16 + 58 =
  27. 27.73 + 12 + 69 + 66 =
  28. 28.28 + 48 + 60 + 59 =
  29. 29.80 + 79 + 12 + 32 =
  30. 30.87 + 37 + 33 + 24 =
  31. 31.24 + 22 + 50 + 61 =
  32. 32.80 + 23 + 15 + 21 =
  33. 33.23 + 77 + 68 + 74 =
  34. 34.50 + 87 + 65 + 84 =
  35. 35.84 + 88 + 15 + 16 =
  36. 36.53 + 52 + 29 + 29 =
  37. 37.31 + 46 + 45 + 62 =
  38. 38.37 + 65 + 22 + 65 =
  39. 39.22 + 76 + 75 + 84 =
  40. 40.48 + 65 + 38 + 52 =

Answer key

  1. 163
  2. 144
  3. 306
  4. 252
  5. 189
  6. 191
  7. 166
  8. 140
  9. 250
  10. 133
  11. 190
  12. 276
  13. 140
  14. 165
  15. 189
  16. 182
  17. 184
  18. 202
  19. 239
  20. 243
  21. 217
  22. 172
  23. 188
  24. 240
  25. 151
  26. 204
  27. 220
  28. 195
  29. 203
  30. 181
  31. 157
  32. 139
  33. 242
  34. 286
  35. 203
  36. 163
  37. 184
  38. 189
  39. 257
  40. 203

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