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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 201 · 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. 1.18 + 71 + 26 + 17 =
  2. 2.61 + 34 + 57 + 63 =
  3. 3.26 + 36 + 21 + 59 =
  4. 4.40 + 74 + 42 + 28 =
  5. 5.83 + 81 + 84 + 12 =
  6. 6.84 + 42 + 71 + 26 =
  7. 7.64 + 84 + 82 + 13 =
  8. 8.71 + 30 + 11 + 29 =
  9. 9.31 + 12 + 88 + 66 =
  10. 10.16 + 73 + 88 + 29 =
  11. 11.82 + 57 + 34 + 39 =
  12. 12.82 + 73 + 71 + 85 =
  13. 13.78 + 15 + 18 + 36 =
  14. 14.24 + 64 + 38 + 81 =
  15. 15.75 + 83 + 49 + 48 =
  16. 16.77 + 77 + 80 + 31 =
  17. 17.12 + 11 + 64 + 70 =
  18. 18.69 + 17 + 75 + 63 =
  19. 19.62 + 79 + 37 + 55 =
  20. 20.28 + 75 + 15 + 54 =
  21. 21.73 + 61 + 56 + 80 =
  22. 22.61 + 67 + 52 + 11 =
  23. 23.77 + 46 + 71 + 58 =
  24. 24.23 + 19 + 43 + 76 =
  25. 25.87 + 26 + 50 + 15 =
  26. 26.57 + 58 + 16 + 26 =
  27. 27.24 + 26 + 67 + 65 =
  28. 28.33 + 33 + 31 + 55 =
  29. 29.27 + 62 + 81 + 73 =
  30. 30.38 + 21 + 55 + 50 =
  31. 31.52 + 24 + 60 + 17 =
  32. 32.36 + 13 + 79 + 39 =
  33. 33.23 + 53 + 16 + 89 =
  34. 34.65 + 38 + 31 + 62 =
  35. 35.88 + 19 + 26 + 13 =
  36. 36.39 + 26 + 63 + 27 =
  37. 37.36 + 19 + 56 + 63 =
  38. 38.15 + 31 + 31 + 25 =
  39. 39.12 + 80 + 52 + 47 =
  40. 40.13 + 71 + 69 + 21 =

Answer key

  1. 132
  2. 215
  3. 142
  4. 184
  5. 260
  6. 223
  7. 243
  8. 141
  9. 197
  10. 206
  11. 212
  12. 311
  13. 147
  14. 207
  15. 255
  16. 265
  17. 157
  18. 224
  19. 233
  20. 172
  21. 270
  22. 191
  23. 252
  24. 161
  25. 178
  26. 157
  27. 182
  28. 152
  29. 243
  30. 164
  31. 153
  32. 167
  33. 181
  34. 196
  35. 146
  36. 155
  37. 174
  38. 102
  39. 191
  40. 174

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