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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 895 · 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. 1.58 + 69 + 70 + 16 =
  2. 2.71 + 87 + 39 + 40 =
  3. 3.16 + 22 + 84 + 14 =
  4. 4.84 + 25 + 83 + 67 =
  5. 5.44 + 13 + 20 + 74 =
  6. 6.20 + 70 + 87 + 31 =
  7. 7.40 + 88 + 45 + 27 =
  8. 8.67 + 61 + 37 + 31 =
  9. 9.60 + 69 + 28 + 89 =
  10. 10.12 + 16 + 22 + 79 =
  11. 11.76 + 24 + 64 + 21 =
  12. 12.63 + 11 + 63 + 12 =
  13. 13.44 + 53 + 19 + 71 =
  14. 14.60 + 62 + 45 + 45 =
  15. 15.30 + 80 + 20 + 82 =
  16. 16.43 + 17 + 58 + 32 =
  17. 17.83 + 71 + 62 + 14 =
  18. 18.58 + 48 + 22 + 27 =
  19. 19.58 + 88 + 34 + 51 =
  20. 20.49 + 11 + 44 + 66 =
  21. 21.39 + 36 + 33 + 30 =
  22. 22.77 + 31 + 78 + 12 =
  23. 23.73 + 33 + 13 + 56 =
  24. 24.47 + 65 + 17 + 32 =
  25. 25.21 + 13 + 51 + 62 =
  26. 26.73 + 55 + 85 + 88 =
  27. 27.22 + 18 + 32 + 74 =
  28. 28.80 + 32 + 66 + 29 =
  29. 29.57 + 46 + 89 + 28 =
  30. 30.47 + 52 + 71 + 40 =
  31. 31.11 + 21 + 35 + 27 =
  32. 32.51 + 53 + 69 + 45 =
  33. 33.22 + 12 + 77 + 26 =
  34. 34.29 + 86 + 59 + 33 =
  35. 35.82 + 50 + 54 + 85 =
  36. 36.58 + 14 + 87 + 40 =
  37. 37.59 + 57 + 61 + 74 =
  38. 38.72 + 60 + 55 + 26 =
  39. 39.67 + 29 + 50 + 31 =
  40. 40.28 + 73 + 25 + 65 =

Answer key

  1. 213
  2. 237
  3. 136
  4. 259
  5. 151
  6. 208
  7. 200
  8. 196
  9. 246
  10. 129
  11. 185
  12. 149
  13. 187
  14. 212
  15. 212
  16. 150
  17. 230
  18. 155
  19. 231
  20. 170
  21. 138
  22. 198
  23. 175
  24. 161
  25. 147
  26. 301
  27. 146
  28. 207
  29. 220
  30. 210
  31. 94
  32. 218
  33. 137
  34. 207
  35. 271
  36. 199
  37. 251
  38. 213
  39. 177
  40. 191

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