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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 954 · 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. 1.50 + 34 + 49 + 76 =
  2. 2.20 + 33 + 71 + 55 =
  3. 3.64 + 86 + 33 + 89 =
  4. 4.62 + 70 + 36 + 44 =
  5. 5.27 + 12 + 19 + 28 =
  6. 6.87 + 55 + 34 + 24 =
  7. 7.84 + 35 + 20 + 49 =
  8. 8.79 + 27 + 40 + 67 =
  9. 9.16 + 33 + 65 + 87 =
  10. 10.80 + 28 + 69 + 22 =
  11. 11.38 + 11 + 47 + 43 =
  12. 12.88 + 83 + 27 + 37 =
  13. 13.29 + 20 + 13 + 19 =
  14. 14.82 + 37 + 86 + 35 =
  15. 15.23 + 62 + 79 + 76 =
  16. 16.72 + 11 + 48 + 53 =
  17. 17.19 + 78 + 63 + 23 =
  18. 18.45 + 28 + 29 + 60 =
  19. 19.39 + 17 + 55 + 61 =
  20. 20.47 + 29 + 28 + 76 =
  21. 21.67 + 72 + 56 + 32 =
  22. 22.16 + 89 + 65 + 25 =
  23. 23.41 + 47 + 71 + 42 =
  24. 24.73 + 48 + 11 + 77 =
  25. 25.68 + 73 + 15 + 74 =
  26. 26.21 + 30 + 20 + 85 =
  27. 27.71 + 68 + 68 + 84 =
  28. 28.30 + 67 + 62 + 44 =
  29. 29.65 + 81 + 57 + 61 =
  30. 30.27 + 83 + 82 + 27 =
  31. 31.56 + 71 + 20 + 84 =
  32. 32.69 + 79 + 25 + 34 =
  33. 33.60 + 37 + 15 + 79 =
  34. 34.86 + 45 + 17 + 14 =
  35. 35.34 + 82 + 66 + 17 =
  36. 36.12 + 72 + 36 + 15 =
  37. 37.54 + 70 + 46 + 85 =
  38. 38.85 + 53 + 27 + 67 =
  39. 39.39 + 40 + 29 + 46 =
  40. 40.67 + 51 + 18 + 33 =

Answer key

  1. 209
  2. 179
  3. 272
  4. 212
  5. 86
  6. 200
  7. 188
  8. 213
  9. 201
  10. 199
  11. 139
  12. 235
  13. 81
  14. 240
  15. 240
  16. 184
  17. 183
  18. 162
  19. 172
  20. 180
  21. 227
  22. 195
  23. 201
  24. 209
  25. 230
  26. 156
  27. 291
  28. 203
  29. 264
  30. 219
  31. 231
  32. 207
  33. 191
  34. 162
  35. 199
  36. 135
  37. 255
  38. 232
  39. 154
  40. 169

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