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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 466 · 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. 1.45 + 56 + 32 + 48 =
  2. 2.75 + 52 + 88 + 33 =
  3. 3.70 + 17 + 71 + 72 =
  4. 4.36 + 14 + 60 + 82 =
  5. 5.73 + 12 + 23 + 82 =
  6. 6.29 + 47 + 37 + 58 =
  7. 7.66 + 65 + 18 + 15 =
  8. 8.88 + 66 + 13 + 20 =
  9. 9.68 + 71 + 34 + 18 =
  10. 10.55 + 45 + 64 + 88 =
  11. 11.31 + 39 + 66 + 11 =
  12. 12.70 + 66 + 54 + 25 =
  13. 13.23 + 65 + 37 + 35 =
  14. 14.65 + 20 + 24 + 75 =
  15. 15.17 + 85 + 71 + 33 =
  16. 16.57 + 16 + 23 + 14 =
  17. 17.43 + 32 + 32 + 64 =
  18. 18.48 + 24 + 43 + 62 =
  19. 19.54 + 12 + 32 + 46 =
  20. 20.83 + 65 + 13 + 45 =
  21. 21.28 + 58 + 55 + 55 =
  22. 22.49 + 78 + 85 + 15 =
  23. 23.85 + 41 + 39 + 16 =
  24. 24.26 + 23 + 28 + 26 =
  25. 25.74 + 28 + 27 + 42 =
  26. 26.62 + 56 + 29 + 43 =
  27. 27.65 + 26 + 35 + 44 =
  28. 28.61 + 62 + 46 + 75 =
  29. 29.28 + 60 + 70 + 31 =
  30. 30.54 + 70 + 71 + 53 =
  31. 31.37 + 32 + 51 + 30 =
  32. 32.78 + 29 + 22 + 38 =
  33. 33.20 + 46 + 38 + 61 =
  34. 34.27 + 79 + 74 + 14 =
  35. 35.13 + 66 + 85 + 60 =
  36. 36.89 + 30 + 29 + 69 =
  37. 37.32 + 21 + 17 + 22 =
  38. 38.63 + 78 + 29 + 69 =
  39. 39.40 + 27 + 53 + 44 =
  40. 40.21 + 79 + 14 + 21 =

Answer key

  1. 181
  2. 248
  3. 230
  4. 192
  5. 190
  6. 171
  7. 164
  8. 187
  9. 191
  10. 252
  11. 147
  12. 215
  13. 160
  14. 184
  15. 206
  16. 110
  17. 171
  18. 177
  19. 144
  20. 206
  21. 196
  22. 227
  23. 181
  24. 103
  25. 171
  26. 190
  27. 170
  28. 244
  29. 189
  30. 248
  31. 150
  32. 167
  33. 165
  34. 194
  35. 224
  36. 217
  37. 92
  38. 239
  39. 164
  40. 135

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