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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 947 · 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. 1.74 + 26 + 31 + 58 =
  2. 2.52 + 44 + 30 + 69 =
  3. 3.64 + 60 + 18 + 64 =
  4. 4.24 + 37 + 87 + 55 =
  5. 5.12 + 46 + 27 + 19 =
  6. 6.41 + 18 + 57 + 11 =
  7. 7.33 + 80 + 12 + 43 =
  8. 8.26 + 25 + 76 + 71 =
  9. 9.60 + 84 + 76 + 30 =
  10. 10.74 + 86 + 89 + 40 =
  11. 11.23 + 44 + 43 + 22 =
  12. 12.12 + 32 + 26 + 44 =
  13. 13.84 + 49 + 13 + 39 =
  14. 14.45 + 15 + 32 + 30 =
  15. 15.60 + 16 + 34 + 26 =
  16. 16.73 + 26 + 26 + 21 =
  17. 17.82 + 15 + 25 + 25 =
  18. 18.22 + 11 + 40 + 70 =
  19. 19.26 + 65 + 72 + 77 =
  20. 20.41 + 63 + 12 + 11 =
  21. 21.63 + 57 + 23 + 21 =
  22. 22.47 + 54 + 45 + 78 =
  23. 23.45 + 22 + 89 + 78 =
  24. 24.82 + 26 + 60 + 21 =
  25. 25.40 + 77 + 51 + 82 =
  26. 26.76 + 81 + 42 + 66 =
  27. 27.56 + 24 + 71 + 37 =
  28. 28.66 + 32 + 87 + 53 =
  29. 29.88 + 14 + 82 + 74 =
  30. 30.52 + 42 + 20 + 32 =
  31. 31.21 + 51 + 25 + 11 =
  32. 32.21 + 81 + 75 + 66 =
  33. 33.89 + 18 + 48 + 33 =
  34. 34.78 + 71 + 61 + 24 =
  35. 35.68 + 32 + 44 + 71 =
  36. 36.17 + 65 + 20 + 41 =
  37. 37.49 + 88 + 49 + 47 =
  38. 38.60 + 57 + 33 + 53 =
  39. 39.80 + 19 + 74 + 21 =
  40. 40.38 + 13 + 76 + 39 =

Answer key

  1. 189
  2. 195
  3. 206
  4. 203
  5. 104
  6. 127
  7. 168
  8. 198
  9. 250
  10. 289
  11. 132
  12. 114
  13. 185
  14. 122
  15. 136
  16. 146
  17. 147
  18. 143
  19. 240
  20. 127
  21. 164
  22. 224
  23. 234
  24. 189
  25. 250
  26. 265
  27. 188
  28. 238
  29. 258
  30. 146
  31. 108
  32. 243
  33. 188
  34. 234
  35. 215
  36. 143
  37. 233
  38. 203
  39. 194
  40. 166

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