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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 706 · 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. 1.11 + 30 + 11 + 40 =
  2. 2.60 + 14 + 27 + 70 =
  3. 3.36 + 71 + 26 + 25 =
  4. 4.47 + 24 + 32 + 52 =
  5. 5.27 + 60 + 17 + 62 =
  6. 6.68 + 30 + 82 + 40 =
  7. 7.66 + 78 + 44 + 13 =
  8. 8.72 + 73 + 66 + 73 =
  9. 9.71 + 87 + 58 + 27 =
  10. 10.57 + 39 + 76 + 18 =
  11. 11.25 + 74 + 28 + 13 =
  12. 12.25 + 84 + 29 + 52 =
  13. 13.13 + 74 + 17 + 67 =
  14. 14.13 + 88 + 12 + 83 =
  15. 15.74 + 24 + 36 + 39 =
  16. 16.84 + 15 + 68 + 60 =
  17. 17.19 + 81 + 71 + 28 =
  18. 18.24 + 50 + 45 + 72 =
  19. 19.16 + 80 + 28 + 63 =
  20. 20.71 + 52 + 24 + 52 =
  21. 21.34 + 66 + 22 + 38 =
  22. 22.76 + 24 + 84 + 31 =
  23. 23.28 + 14 + 19 + 21 =
  24. 24.23 + 64 + 73 + 43 =
  25. 25.25 + 32 + 21 + 26 =
  26. 26.80 + 54 + 74 + 33 =
  27. 27.33 + 48 + 22 + 66 =
  28. 28.55 + 51 + 75 + 76 =
  29. 29.15 + 23 + 66 + 25 =
  30. 30.13 + 70 + 24 + 37 =
  31. 31.88 + 66 + 65 + 68 =
  32. 32.36 + 13 + 30 + 84 =
  33. 33.46 + 69 + 89 + 71 =
  34. 34.53 + 31 + 65 + 20 =
  35. 35.26 + 76 + 18 + 70 =
  36. 36.30 + 49 + 59 + 37 =
  37. 37.62 + 18 + 17 + 85 =
  38. 38.22 + 47 + 27 + 36 =
  39. 39.25 + 73 + 76 + 59 =
  40. 40.76 + 63 + 53 + 19 =

Answer key

  1. 92
  2. 171
  3. 158
  4. 155
  5. 166
  6. 220
  7. 201
  8. 284
  9. 243
  10. 190
  11. 140
  12. 190
  13. 171
  14. 196
  15. 173
  16. 227
  17. 199
  18. 191
  19. 187
  20. 199
  21. 160
  22. 215
  23. 82
  24. 203
  25. 104
  26. 241
  27. 169
  28. 257
  29. 129
  30. 144
  31. 287
  32. 163
  33. 275
  34. 169
  35. 190
  36. 175
  37. 182
  38. 132
  39. 233
  40. 211

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