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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 885 · 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. 1.62 + 59 + 37 + 23 =
  2. 2.17 + 38 + 44 + 11 =
  3. 3.40 + 64 + 36 + 28 =
  4. 4.57 + 29 + 32 + 69 =
  5. 5.22 + 55 + 72 + 30 =
  6. 6.23 + 18 + 81 + 48 =
  7. 7.26 + 59 + 45 + 16 =
  8. 8.23 + 47 + 51 + 52 =
  9. 9.74 + 15 + 52 + 32 =
  10. 10.26 + 49 + 67 + 67 =
  11. 11.47 + 69 + 21 + 77 =
  12. 12.58 + 59 + 55 + 83 =
  13. 13.23 + 84 + 42 + 62 =
  14. 14.44 + 13 + 14 + 18 =
  15. 15.71 + 30 + 30 + 50 =
  16. 16.24 + 56 + 61 + 75 =
  17. 17.37 + 46 + 81 + 66 =
  18. 18.88 + 39 + 76 + 11 =
  19. 19.86 + 67 + 26 + 38 =
  20. 20.12 + 36 + 18 + 32 =
  21. 21.17 + 26 + 71 + 36 =
  22. 22.53 + 46 + 32 + 88 =
  23. 23.15 + 85 + 44 + 16 =
  24. 24.64 + 66 + 17 + 69 =
  25. 25.62 + 68 + 14 + 52 =
  26. 26.17 + 67 + 51 + 70 =
  27. 27.52 + 23 + 19 + 71 =
  28. 28.21 + 12 + 27 + 56 =
  29. 29.34 + 70 + 75 + 86 =
  30. 30.82 + 44 + 16 + 71 =
  31. 31.45 + 62 + 74 + 54 =
  32. 32.78 + 62 + 33 + 55 =
  33. 33.79 + 29 + 41 + 26 =
  34. 34.65 + 68 + 32 + 69 =
  35. 35.51 + 70 + 20 + 12 =
  36. 36.83 + 52 + 12 + 88 =
  37. 37.15 + 46 + 53 + 22 =
  38. 38.40 + 33 + 66 + 17 =
  39. 39.38 + 35 + 61 + 79 =
  40. 40.29 + 64 + 11 + 30 =

Answer key

  1. 181
  2. 110
  3. 168
  4. 187
  5. 179
  6. 170
  7. 146
  8. 173
  9. 173
  10. 209
  11. 214
  12. 255
  13. 211
  14. 89
  15. 181
  16. 216
  17. 230
  18. 214
  19. 217
  20. 98
  21. 150
  22. 219
  23. 160
  24. 216
  25. 196
  26. 205
  27. 165
  28. 116
  29. 265
  30. 213
  31. 235
  32. 228
  33. 175
  34. 234
  35. 153
  36. 235
  37. 136
  38. 156
  39. 213
  40. 134

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