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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 861 · 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 + 77 + 26 + 17 =
  2. 2.20 + 84 + 33 + 33 =
  3. 3.20 + 29 + 70 + 84 =
  4. 4.44 + 40 + 60 + 72 =
  5. 5.35 + 57 + 72 + 65 =
  6. 6.53 + 24 + 24 + 38 =
  7. 7.73 + 71 + 19 + 70 =
  8. 8.16 + 79 + 39 + 78 =
  9. 9.44 + 84 + 20 + 74 =
  10. 10.78 + 16 + 43 + 45 =
  11. 11.53 + 62 + 51 + 77 =
  12. 12.22 + 36 + 31 + 13 =
  13. 13.17 + 65 + 78 + 68 =
  14. 14.31 + 81 + 81 + 20 =
  15. 15.44 + 17 + 66 + 47 =
  16. 16.65 + 61 + 69 + 38 =
  17. 17.15 + 76 + 14 + 54 =
  18. 18.41 + 84 + 66 + 18 =
  19. 19.28 + 49 + 71 + 40 =
  20. 20.23 + 59 + 47 + 29 =
  21. 21.19 + 42 + 23 + 78 =
  22. 22.26 + 45 + 19 + 88 =
  23. 23.81 + 33 + 64 + 31 =
  24. 24.32 + 50 + 40 + 56 =
  25. 25.50 + 51 + 41 + 73 =
  26. 26.37 + 63 + 31 + 16 =
  27. 27.11 + 80 + 29 + 70 =
  28. 28.75 + 81 + 72 + 47 =
  29. 29.64 + 27 + 59 + 34 =
  30. 30.78 + 40 + 71 + 45 =
  31. 31.87 + 36 + 50 + 17 =
  32. 32.50 + 89 + 53 + 13 =
  33. 33.40 + 20 + 26 + 69 =
  34. 34.53 + 76 + 87 + 33 =
  35. 35.66 + 68 + 23 + 55 =
  36. 36.60 + 64 + 25 + 58 =
  37. 37.53 + 44 + 34 + 44 =
  38. 38.58 + 80 + 60 + 82 =
  39. 39.71 + 83 + 37 + 83 =
  40. 40.74 + 27 + 17 + 58 =

Answer key

  1. 194
  2. 170
  3. 203
  4. 216
  5. 229
  6. 139
  7. 233
  8. 212
  9. 222
  10. 182
  11. 243
  12. 102
  13. 228
  14. 213
  15. 174
  16. 233
  17. 159
  18. 209
  19. 188
  20. 158
  21. 162
  22. 178
  23. 209
  24. 178
  25. 215
  26. 147
  27. 190
  28. 275
  29. 184
  30. 234
  31. 190
  32. 205
  33. 155
  34. 249
  35. 212
  36. 207
  37. 175
  38. 280
  39. 274
  40. 176

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