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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 235 · 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. 1.36 + 18 + 63 + 72 =
  2. 2.66 + 66 + 43 + 48 =
  3. 3.20 + 67 + 36 + 57 =
  4. 4.30 + 23 + 39 + 23 =
  5. 5.59 + 16 + 88 + 32 =
  6. 6.19 + 88 + 72 + 62 =
  7. 7.78 + 15 + 78 + 33 =
  8. 8.64 + 52 + 27 + 15 =
  9. 9.85 + 44 + 69 + 55 =
  10. 10.63 + 19 + 38 + 30 =
  11. 11.49 + 11 + 43 + 18 =
  12. 12.39 + 55 + 62 + 71 =
  13. 13.50 + 74 + 73 + 21 =
  14. 14.65 + 28 + 40 + 47 =
  15. 15.78 + 70 + 37 + 13 =
  16. 16.24 + 66 + 36 + 71 =
  17. 17.65 + 19 + 11 + 87 =
  18. 18.45 + 54 + 24 + 48 =
  19. 19.27 + 34 + 27 + 28 =
  20. 20.86 + 35 + 76 + 72 =
  21. 21.39 + 42 + 15 + 37 =
  22. 22.41 + 28 + 53 + 57 =
  23. 23.24 + 38 + 67 + 77 =
  24. 24.21 + 29 + 17 + 24 =
  25. 25.45 + 83 + 62 + 64 =
  26. 26.69 + 75 + 40 + 18 =
  27. 27.27 + 26 + 58 + 40 =
  28. 28.89 + 15 + 56 + 70 =
  29. 29.20 + 72 + 67 + 84 =
  30. 30.81 + 23 + 26 + 38 =
  31. 31.59 + 12 + 47 + 74 =
  32. 32.33 + 40 + 80 + 83 =
  33. 33.89 + 84 + 40 + 72 =
  34. 34.31 + 28 + 66 + 67 =
  35. 35.45 + 41 + 14 + 52 =
  36. 36.12 + 16 + 16 + 25 =
  37. 37.87 + 89 + 12 + 26 =
  38. 38.45 + 50 + 23 + 37 =
  39. 39.17 + 59 + 23 + 12 =
  40. 40.37 + 24 + 75 + 32 =

Answer key

  1. 189
  2. 223
  3. 180
  4. 115
  5. 195
  6. 241
  7. 204
  8. 158
  9. 253
  10. 150
  11. 121
  12. 227
  13. 218
  14. 180
  15. 198
  16. 197
  17. 182
  18. 171
  19. 116
  20. 269
  21. 133
  22. 179
  23. 206
  24. 91
  25. 254
  26. 202
  27. 151
  28. 230
  29. 243
  30. 168
  31. 192
  32. 236
  33. 285
  34. 192
  35. 152
  36. 69
  37. 214
  38. 155
  39. 111
  40. 168

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