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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 709 · 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. 1.17 + 26 + 18 + 71 =
  2. 2.18 + 58 + 11 + 86 =
  3. 3.31 + 40 + 37 + 32 =
  4. 4.55 + 51 + 58 + 82 =
  5. 5.27 + 71 + 25 + 85 =
  6. 6.25 + 17 + 83 + 28 =
  7. 7.22 + 64 + 65 + 85 =
  8. 8.32 + 48 + 64 + 63 =
  9. 9.54 + 24 + 50 + 74 =
  10. 10.17 + 35 + 33 + 64 =
  11. 11.43 + 56 + 58 + 67 =
  12. 12.14 + 38 + 39 + 31 =
  13. 13.26 + 81 + 51 + 29 =
  14. 14.32 + 74 + 47 + 56 =
  15. 15.29 + 44 + 42 + 51 =
  16. 16.85 + 29 + 35 + 72 =
  17. 17.88 + 40 + 30 + 81 =
  18. 18.17 + 68 + 36 + 49 =
  19. 19.42 + 36 + 22 + 88 =
  20. 20.34 + 63 + 50 + 32 =
  21. 21.42 + 14 + 48 + 20 =
  22. 22.21 + 70 + 49 + 15 =
  23. 23.75 + 56 + 80 + 67 =
  24. 24.20 + 16 + 52 + 35 =
  25. 25.82 + 82 + 32 + 60 =
  26. 26.81 + 69 + 67 + 89 =
  27. 27.26 + 64 + 28 + 69 =
  28. 28.19 + 75 + 69 + 61 =
  29. 29.60 + 64 + 79 + 49 =
  30. 30.58 + 37 + 18 + 13 =
  31. 31.18 + 18 + 31 + 11 =
  32. 32.47 + 16 + 64 + 13 =
  33. 33.77 + 49 + 30 + 84 =
  34. 34.17 + 16 + 41 + 56 =
  35. 35.33 + 43 + 24 + 33 =
  36. 36.16 + 78 + 41 + 36 =
  37. 37.79 + 80 + 36 + 18 =
  38. 38.17 + 22 + 32 + 29 =
  39. 39.46 + 45 + 79 + 34 =
  40. 40.60 + 23 + 38 + 88 =

Answer key

  1. 132
  2. 173
  3. 140
  4. 246
  5. 208
  6. 153
  7. 236
  8. 207
  9. 202
  10. 149
  11. 224
  12. 122
  13. 187
  14. 209
  15. 166
  16. 221
  17. 239
  18. 170
  19. 188
  20. 179
  21. 124
  22. 155
  23. 278
  24. 123
  25. 256
  26. 306
  27. 187
  28. 224
  29. 252
  30. 126
  31. 78
  32. 140
  33. 240
  34. 130
  35. 133
  36. 171
  37. 213
  38. 100
  39. 204
  40. 209

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