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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 614 · 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. 1.41 + 26 + 31 + 63 =
  2. 2.48 + 56 + 58 + 68 =
  3. 3.30 + 28 + 35 + 11 =
  4. 4.23 + 75 + 30 + 66 =
  5. 5.11 + 19 + 17 + 63 =
  6. 6.64 + 67 + 87 + 21 =
  7. 7.44 + 53 + 36 + 73 =
  8. 8.49 + 81 + 63 + 67 =
  9. 9.27 + 60 + 17 + 11 =
  10. 10.70 + 65 + 83 + 73 =
  11. 11.52 + 35 + 26 + 27 =
  12. 12.37 + 48 + 69 + 65 =
  13. 13.26 + 81 + 35 + 28 =
  14. 14.58 + 58 + 72 + 51 =
  15. 15.87 + 87 + 86 + 47 =
  16. 16.76 + 82 + 79 + 45 =
  17. 17.64 + 19 + 79 + 37 =
  18. 18.24 + 56 + 86 + 27 =
  19. 19.42 + 60 + 38 + 28 =
  20. 20.23 + 24 + 36 + 55 =
  21. 21.45 + 55 + 86 + 53 =
  22. 22.77 + 26 + 33 + 34 =
  23. 23.66 + 11 + 82 + 11 =
  24. 24.24 + 16 + 12 + 12 =
  25. 25.64 + 32 + 12 + 45 =
  26. 26.14 + 26 + 18 + 76 =
  27. 27.62 + 75 + 40 + 76 =
  28. 28.88 + 61 + 45 + 40 =
  29. 29.32 + 52 + 18 + 66 =
  30. 30.59 + 27 + 45 + 13 =
  31. 31.51 + 72 + 20 + 18 =
  32. 32.60 + 58 + 72 + 19 =
  33. 33.25 + 50 + 25 + 58 =
  34. 34.39 + 71 + 35 + 27 =
  35. 35.60 + 50 + 54 + 55 =
  36. 36.11 + 17 + 26 + 45 =
  37. 37.46 + 82 + 20 + 83 =
  38. 38.30 + 83 + 44 + 81 =
  39. 39.23 + 42 + 59 + 42 =
  40. 40.41 + 53 + 40 + 75 =

Answer key

  1. 161
  2. 230
  3. 104
  4. 194
  5. 110
  6. 239
  7. 206
  8. 260
  9. 115
  10. 291
  11. 140
  12. 219
  13. 170
  14. 239
  15. 307
  16. 282
  17. 199
  18. 193
  19. 168
  20. 138
  21. 239
  22. 170
  23. 170
  24. 64
  25. 153
  26. 134
  27. 253
  28. 234
  29. 168
  30. 144
  31. 161
  32. 209
  33. 158
  34. 172
  35. 219
  36. 99
  37. 231
  38. 238
  39. 166
  40. 209

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