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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 552 · 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. 1.16 + 71 + 21 + 46 =
  2. 2.35 + 21 + 16 + 35 =
  3. 3.79 + 82 + 87 + 44 =
  4. 4.43 + 68 + 73 + 32 =
  5. 5.27 + 37 + 82 + 68 =
  6. 6.22 + 31 + 25 + 59 =
  7. 7.17 + 56 + 59 + 49 =
  8. 8.65 + 70 + 44 + 77 =
  9. 9.89 + 77 + 29 + 17 =
  10. 10.42 + 89 + 14 + 62 =
  11. 11.20 + 16 + 69 + 69 =
  12. 12.51 + 49 + 17 + 25 =
  13. 13.41 + 76 + 87 + 89 =
  14. 14.83 + 71 + 15 + 83 =
  15. 15.46 + 44 + 88 + 59 =
  16. 16.64 + 38 + 54 + 57 =
  17. 17.69 + 60 + 55 + 20 =
  18. 18.15 + 62 + 70 + 87 =
  19. 19.60 + 36 + 89 + 11 =
  20. 20.41 + 20 + 23 + 54 =
  21. 21.50 + 15 + 58 + 49 =
  22. 22.63 + 68 + 34 + 72 =
  23. 23.77 + 25 + 75 + 44 =
  24. 24.12 + 33 + 79 + 56 =
  25. 25.34 + 22 + 64 + 35 =
  26. 26.16 + 30 + 67 + 77 =
  27. 27.49 + 81 + 86 + 57 =
  28. 28.76 + 39 + 76 + 44 =
  29. 29.18 + 88 + 37 + 34 =
  30. 30.50 + 88 + 88 + 17 =
  31. 31.67 + 71 + 29 + 46 =
  32. 32.18 + 51 + 26 + 57 =
  33. 33.75 + 69 + 47 + 29 =
  34. 34.33 + 63 + 78 + 41 =
  35. 35.73 + 89 + 16 + 35 =
  36. 36.26 + 28 + 53 + 31 =
  37. 37.52 + 47 + 24 + 41 =
  38. 38.72 + 53 + 39 + 66 =
  39. 39.26 + 39 + 42 + 48 =
  40. 40.63 + 84 + 21 + 20 =

Answer key

  1. 154
  2. 107
  3. 292
  4. 216
  5. 214
  6. 137
  7. 181
  8. 256
  9. 212
  10. 207
  11. 174
  12. 142
  13. 293
  14. 252
  15. 237
  16. 213
  17. 204
  18. 234
  19. 196
  20. 138
  21. 172
  22. 237
  23. 221
  24. 180
  25. 155
  26. 190
  27. 273
  28. 235
  29. 177
  30. 243
  31. 213
  32. 152
  33. 220
  34. 215
  35. 213
  36. 138
  37. 164
  38. 230
  39. 155
  40. 188

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