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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 652 · 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. 1.27 + 26 + 76 + 83 =
  2. 2.80 + 32 + 76 + 55 =
  3. 3.70 + 77 + 22 + 84 =
  4. 4.35 + 24 + 44 + 48 =
  5. 5.46 + 14 + 88 + 81 =
  6. 6.76 + 59 + 31 + 65 =
  7. 7.55 + 25 + 12 + 46 =
  8. 8.71 + 31 + 28 + 86 =
  9. 9.31 + 28 + 36 + 80 =
  10. 10.35 + 35 + 77 + 86 =
  11. 11.63 + 56 + 60 + 23 =
  12. 12.77 + 35 + 64 + 72 =
  13. 13.13 + 23 + 42 + 81 =
  14. 14.28 + 29 + 40 + 38 =
  15. 15.58 + 80 + 30 + 62 =
  16. 16.83 + 47 + 86 + 75 =
  17. 17.19 + 53 + 41 + 15 =
  18. 18.32 + 50 + 33 + 78 =
  19. 19.79 + 14 + 64 + 84 =
  20. 20.78 + 12 + 43 + 37 =
  21. 21.46 + 88 + 51 + 16 =
  22. 22.66 + 86 + 69 + 18 =
  23. 23.57 + 82 + 87 + 36 =
  24. 24.39 + 61 + 48 + 81 =
  25. 25.84 + 35 + 16 + 53 =
  26. 26.22 + 45 + 51 + 54 =
  27. 27.31 + 55 + 60 + 17 =
  28. 28.87 + 26 + 89 + 20 =
  29. 29.24 + 29 + 18 + 45 =
  30. 30.41 + 53 + 38 + 79 =
  31. 31.37 + 17 + 26 + 80 =
  32. 32.89 + 64 + 48 + 39 =
  33. 33.75 + 38 + 76 + 53 =
  34. 34.33 + 29 + 62 + 61 =
  35. 35.31 + 81 + 52 + 15 =
  36. 36.59 + 68 + 64 + 36 =
  37. 37.35 + 66 + 40 + 45 =
  38. 38.49 + 86 + 67 + 67 =
  39. 39.58 + 19 + 80 + 37 =
  40. 40.46 + 25 + 53 + 64 =

Answer key

  1. 212
  2. 243
  3. 253
  4. 151
  5. 229
  6. 231
  7. 138
  8. 216
  9. 175
  10. 233
  11. 202
  12. 248
  13. 159
  14. 135
  15. 230
  16. 291
  17. 128
  18. 193
  19. 241
  20. 170
  21. 201
  22. 239
  23. 262
  24. 229
  25. 188
  26. 172
  27. 163
  28. 222
  29. 116
  30. 211
  31. 160
  32. 240
  33. 242
  34. 185
  35. 179
  36. 227
  37. 186
  38. 269
  39. 194
  40. 188

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