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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 200 · 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. 1.31 + 61 + 83 + 77 =
  2. 2.20 + 30 + 82 + 19 =
  3. 3.82 + 30 + 62 + 32 =
  4. 4.82 + 23 + 82 + 85 =
  5. 5.37 + 43 + 25 + 18 =
  6. 6.42 + 46 + 73 + 17 =
  7. 7.23 + 73 + 19 + 39 =
  8. 8.60 + 56 + 31 + 23 =
  9. 9.74 + 24 + 74 + 69 =
  10. 10.35 + 68 + 24 + 21 =
  11. 11.56 + 64 + 86 + 27 =
  12. 12.27 + 67 + 24 + 38 =
  13. 13.39 + 77 + 26 + 86 =
  14. 14.78 + 65 + 51 + 75 =
  15. 15.15 + 32 + 26 + 82 =
  16. 16.25 + 29 + 14 + 16 =
  17. 17.45 + 70 + 13 + 74 =
  18. 18.65 + 55 + 16 + 51 =
  19. 19.43 + 74 + 55 + 51 =
  20. 20.62 + 45 + 41 + 20 =
  21. 21.61 + 21 + 23 + 57 =
  22. 22.60 + 42 + 77 + 70 =
  23. 23.41 + 22 + 76 + 13 =
  24. 24.47 + 54 + 27 + 34 =
  25. 25.56 + 63 + 33 + 71 =
  26. 26.60 + 46 + 68 + 29 =
  27. 27.85 + 53 + 54 + 38 =
  28. 28.79 + 38 + 67 + 76 =
  29. 29.17 + 81 + 50 + 22 =
  30. 30.29 + 24 + 65 + 28 =
  31. 31.17 + 29 + 48 + 68 =
  32. 32.14 + 38 + 59 + 13 =
  33. 33.23 + 38 + 19 + 41 =
  34. 34.76 + 77 + 86 + 16 =
  35. 35.19 + 45 + 65 + 87 =
  36. 36.48 + 83 + 67 + 28 =
  37. 37.37 + 24 + 26 + 14 =
  38. 38.51 + 84 + 69 + 84 =
  39. 39.29 + 46 + 17 + 26 =
  40. 40.11 + 25 + 69 + 75 =

Answer key

  1. 252
  2. 151
  3. 206
  4. 272
  5. 123
  6. 178
  7. 154
  8. 170
  9. 241
  10. 148
  11. 233
  12. 156
  13. 228
  14. 269
  15. 155
  16. 84
  17. 202
  18. 187
  19. 223
  20. 168
  21. 162
  22. 249
  23. 152
  24. 162
  25. 223
  26. 203
  27. 230
  28. 260
  29. 170
  30. 146
  31. 162
  32. 124
  33. 121
  34. 255
  35. 216
  36. 226
  37. 101
  38. 288
  39. 118
  40. 180

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