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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 951 · 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. 1.29 + 46 + 80 + 57 =
  2. 2.14 + 53 + 23 + 33 =
  3. 3.88 + 46 + 22 + 20 =
  4. 4.66 + 20 + 84 + 18 =
  5. 5.29 + 15 + 77 + 74 =
  6. 6.31 + 72 + 77 + 62 =
  7. 7.29 + 26 + 20 + 17 =
  8. 8.65 + 70 + 29 + 46 =
  9. 9.71 + 42 + 32 + 20 =
  10. 10.22 + 15 + 56 + 67 =
  11. 11.39 + 40 + 36 + 65 =
  12. 12.25 + 28 + 75 + 67 =
  13. 13.65 + 73 + 72 + 39 =
  14. 14.56 + 27 + 73 + 18 =
  15. 15.15 + 48 + 47 + 83 =
  16. 16.19 + 87 + 60 + 19 =
  17. 17.45 + 59 + 57 + 30 =
  18. 18.19 + 63 + 21 + 23 =
  19. 19.16 + 31 + 23 + 54 =
  20. 20.13 + 45 + 22 + 35 =
  21. 21.73 + 14 + 13 + 45 =
  22. 22.67 + 22 + 73 + 35 =
  23. 23.29 + 18 + 41 + 85 =
  24. 24.87 + 26 + 30 + 89 =
  25. 25.88 + 60 + 22 + 36 =
  26. 26.67 + 70 + 31 + 36 =
  27. 27.64 + 51 + 18 + 16 =
  28. 28.27 + 77 + 18 + 30 =
  29. 29.29 + 11 + 40 + 26 =
  30. 30.76 + 75 + 59 + 15 =
  31. 31.33 + 69 + 54 + 87 =
  32. 32.39 + 87 + 14 + 24 =
  33. 33.85 + 47 + 22 + 12 =
  34. 34.65 + 76 + 26 + 54 =
  35. 35.62 + 46 + 26 + 20 =
  36. 36.14 + 60 + 49 + 72 =
  37. 37.54 + 81 + 57 + 81 =
  38. 38.81 + 31 + 25 + 26 =
  39. 39.50 + 47 + 68 + 88 =
  40. 40.60 + 67 + 24 + 87 =

Answer key

  1. 212
  2. 123
  3. 176
  4. 188
  5. 195
  6. 242
  7. 92
  8. 210
  9. 165
  10. 160
  11. 180
  12. 195
  13. 249
  14. 174
  15. 193
  16. 185
  17. 191
  18. 126
  19. 124
  20. 115
  21. 145
  22. 197
  23. 173
  24. 232
  25. 206
  26. 204
  27. 149
  28. 152
  29. 106
  30. 225
  31. 243
  32. 164
  33. 166
  34. 221
  35. 154
  36. 195
  37. 273
  38. 163
  39. 253
  40. 238

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