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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 230 · 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. 1.14 + 23 + 55 + 15 =
  2. 2.77 + 13 + 34 + 46 =
  3. 3.11 + 46 + 34 + 80 =
  4. 4.47 + 63 + 11 + 34 =
  5. 5.35 + 36 + 31 + 87 =
  6. 6.54 + 34 + 24 + 59 =
  7. 7.27 + 59 + 37 + 46 =
  8. 8.12 + 13 + 30 + 60 =
  9. 9.32 + 31 + 65 + 16 =
  10. 10.34 + 49 + 19 + 80 =
  11. 11.89 + 70 + 77 + 22 =
  12. 12.18 + 21 + 28 + 25 =
  13. 13.49 + 66 + 83 + 20 =
  14. 14.56 + 78 + 57 + 62 =
  15. 15.74 + 22 + 47 + 63 =
  16. 16.58 + 15 + 31 + 16 =
  17. 17.36 + 44 + 59 + 84 =
  18. 18.60 + 36 + 67 + 64 =
  19. 19.52 + 33 + 54 + 75 =
  20. 20.33 + 22 + 35 + 84 =
  21. 21.50 + 76 + 34 + 52 =
  22. 22.88 + 37 + 79 + 29 =
  23. 23.85 + 70 + 39 + 25 =
  24. 24.69 + 25 + 51 + 55 =
  25. 25.35 + 35 + 52 + 88 =
  26. 26.19 + 75 + 28 + 19 =
  27. 27.28 + 66 + 54 + 55 =
  28. 28.32 + 11 + 23 + 23 =
  29. 29.41 + 81 + 76 + 53 =
  30. 30.78 + 38 + 57 + 25 =
  31. 31.15 + 53 + 82 + 85 =
  32. 32.45 + 56 + 60 + 53 =
  33. 33.36 + 84 + 55 + 67 =
  34. 34.86 + 44 + 14 + 73 =
  35. 35.17 + 82 + 62 + 73 =
  36. 36.73 + 84 + 63 + 25 =
  37. 37.76 + 89 + 72 + 48 =
  38. 38.13 + 44 + 21 + 40 =
  39. 39.25 + 52 + 30 + 62 =
  40. 40.86 + 15 + 33 + 59 =

Answer key

  1. 107
  2. 170
  3. 171
  4. 155
  5. 189
  6. 171
  7. 169
  8. 115
  9. 144
  10. 182
  11. 258
  12. 92
  13. 218
  14. 253
  15. 206
  16. 120
  17. 223
  18. 227
  19. 214
  20. 174
  21. 212
  22. 233
  23. 219
  24. 200
  25. 210
  26. 141
  27. 203
  28. 89
  29. 251
  30. 198
  31. 235
  32. 214
  33. 242
  34. 217
  35. 234
  36. 245
  37. 285
  38. 118
  39. 169
  40. 193

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