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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 613 · 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 + 24 + 46 + 49 =
  2. 2.28 + 83 + 83 + 69 =
  3. 3.46 + 33 + 48 + 57 =
  4. 4.13 + 55 + 72 + 33 =
  5. 5.20 + 87 + 69 + 48 =
  6. 6.42 + 64 + 87 + 30 =
  7. 7.44 + 33 + 82 + 82 =
  8. 8.30 + 16 + 49 + 24 =
  9. 9.76 + 54 + 37 + 45 =
  10. 10.69 + 19 + 39 + 55 =
  11. 11.44 + 37 + 33 + 28 =
  12. 12.58 + 22 + 35 + 21 =
  13. 13.21 + 85 + 45 + 60 =
  14. 14.16 + 58 + 68 + 79 =
  15. 15.14 + 53 + 74 + 19 =
  16. 16.32 + 45 + 32 + 73 =
  17. 17.11 + 13 + 69 + 89 =
  18. 18.64 + 64 + 62 + 40 =
  19. 19.30 + 38 + 44 + 29 =
  20. 20.25 + 19 + 37 + 48 =
  21. 21.27 + 44 + 52 + 61 =
  22. 22.30 + 86 + 66 + 31 =
  23. 23.37 + 37 + 47 + 58 =
  24. 24.69 + 18 + 80 + 62 =
  25. 25.85 + 24 + 17 + 55 =
  26. 26.34 + 20 + 40 + 60 =
  27. 27.56 + 67 + 50 + 77 =
  28. 28.81 + 14 + 59 + 31 =
  29. 29.17 + 64 + 43 + 82 =
  30. 30.37 + 26 + 14 + 15 =
  31. 31.47 + 72 + 86 + 75 =
  32. 32.45 + 67 + 80 + 18 =
  33. 33.24 + 20 + 16 + 26 =
  34. 34.75 + 14 + 15 + 33 =
  35. 35.29 + 82 + 43 + 89 =
  36. 36.78 + 47 + 69 + 74 =
  37. 37.26 + 36 + 12 + 33 =
  38. 38.78 + 43 + 42 + 31 =
  39. 39.65 + 83 + 43 + 80 =
  40. 40.30 + 71 + 67 + 20 =

Answer key

  1. 160
  2. 263
  3. 184
  4. 173
  5. 224
  6. 223
  7. 241
  8. 119
  9. 212
  10. 182
  11. 142
  12. 136
  13. 211
  14. 221
  15. 160
  16. 182
  17. 182
  18. 230
  19. 141
  20. 129
  21. 184
  22. 213
  23. 179
  24. 229
  25. 181
  26. 154
  27. 250
  28. 185
  29. 206
  30. 92
  31. 280
  32. 210
  33. 86
  34. 137
  35. 243
  36. 268
  37. 107
  38. 194
  39. 271
  40. 188

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