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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 677 · 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. 1.84 + 29 + 35 + 34 =
  2. 2.55 + 72 + 87 + 60 =
  3. 3.28 + 23 + 88 + 43 =
  4. 4.88 + 73 + 19 + 75 =
  5. 5.61 + 37 + 13 + 88 =
  6. 6.20 + 65 + 63 + 38 =
  7. 7.55 + 30 + 63 + 76 =
  8. 8.86 + 24 + 69 + 57 =
  9. 9.41 + 68 + 73 + 87 =
  10. 10.32 + 11 + 33 + 23 =
  11. 11.86 + 18 + 60 + 49 =
  12. 12.17 + 84 + 53 + 41 =
  13. 13.14 + 81 + 47 + 62 =
  14. 14.86 + 80 + 57 + 73 =
  15. 15.26 + 75 + 15 + 26 =
  16. 16.17 + 89 + 55 + 20 =
  17. 17.78 + 80 + 83 + 61 =
  18. 18.25 + 36 + 12 + 64 =
  19. 19.55 + 24 + 49 + 39 =
  20. 20.33 + 29 + 36 + 66 =
  21. 21.51 + 89 + 73 + 86 =
  22. 22.34 + 85 + 82 + 30 =
  23. 23.76 + 51 + 23 + 72 =
  24. 24.31 + 17 + 23 + 37 =
  25. 25.73 + 69 + 78 + 67 =
  26. 26.56 + 87 + 89 + 56 =
  27. 27.17 + 22 + 32 + 61 =
  28. 28.18 + 31 + 78 + 38 =
  29. 29.59 + 13 + 13 + 64 =
  30. 30.82 + 85 + 43 + 38 =
  31. 31.30 + 56 + 69 + 21 =
  32. 32.46 + 31 + 60 + 35 =
  33. 33.61 + 32 + 55 + 45 =
  34. 34.42 + 80 + 81 + 19 =
  35. 35.55 + 44 + 14 + 15 =
  36. 36.85 + 31 + 42 + 69 =
  37. 37.62 + 72 + 39 + 63 =
  38. 38.27 + 33 + 14 + 89 =
  39. 39.27 + 76 + 47 + 62 =
  40. 40.19 + 54 + 17 + 25 =

Answer key

  1. 182
  2. 274
  3. 182
  4. 255
  5. 199
  6. 186
  7. 224
  8. 236
  9. 269
  10. 99
  11. 213
  12. 195
  13. 204
  14. 296
  15. 142
  16. 181
  17. 302
  18. 137
  19. 167
  20. 164
  21. 299
  22. 231
  23. 222
  24. 108
  25. 287
  26. 288
  27. 132
  28. 165
  29. 149
  30. 248
  31. 176
  32. 172
  33. 193
  34. 222
  35. 128
  36. 227
  37. 236
  38. 163
  39. 212
  40. 115

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