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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 498 · 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. 1.82 + 19 + 50 + 46 =
  2. 2.38 + 22 + 41 + 83 =
  3. 3.46 + 12 + 55 + 79 =
  4. 4.18 + 43 + 14 + 64 =
  5. 5.86 + 18 + 30 + 30 =
  6. 6.44 + 22 + 52 + 49 =
  7. 7.70 + 53 + 20 + 39 =
  8. 8.76 + 70 + 68 + 71 =
  9. 9.88 + 72 + 37 + 23 =
  10. 10.65 + 56 + 78 + 51 =
  11. 11.64 + 14 + 74 + 41 =
  12. 12.57 + 62 + 21 + 43 =
  13. 13.60 + 82 + 14 + 65 =
  14. 14.25 + 68 + 46 + 82 =
  15. 15.29 + 21 + 24 + 52 =
  16. 16.34 + 29 + 44 + 74 =
  17. 17.48 + 36 + 50 + 27 =
  18. 18.23 + 24 + 18 + 11 =
  19. 19.15 + 56 + 32 + 51 =
  20. 20.30 + 23 + 55 + 47 =
  21. 21.66 + 80 + 27 + 17 =
  22. 22.16 + 19 + 80 + 49 =
  23. 23.65 + 14 + 47 + 56 =
  24. 24.62 + 28 + 69 + 72 =
  25. 25.32 + 14 + 75 + 48 =
  26. 26.25 + 55 + 53 + 65 =
  27. 27.72 + 80 + 45 + 53 =
  28. 28.19 + 25 + 70 + 23 =
  29. 29.68 + 45 + 24 + 72 =
  30. 30.15 + 34 + 75 + 84 =
  31. 31.43 + 60 + 59 + 83 =
  32. 32.82 + 42 + 25 + 77 =
  33. 33.82 + 56 + 73 + 71 =
  34. 34.29 + 20 + 42 + 55 =
  35. 35.18 + 25 + 80 + 46 =
  36. 36.37 + 19 + 11 + 16 =
  37. 37.32 + 66 + 45 + 30 =
  38. 38.53 + 17 + 59 + 43 =
  39. 39.75 + 59 + 23 + 62 =
  40. 40.73 + 62 + 38 + 60 =

Answer key

  1. 197
  2. 184
  3. 192
  4. 139
  5. 164
  6. 167
  7. 182
  8. 285
  9. 220
  10. 250
  11. 193
  12. 183
  13. 221
  14. 221
  15. 126
  16. 181
  17. 161
  18. 76
  19. 154
  20. 155
  21. 190
  22. 164
  23. 182
  24. 231
  25. 169
  26. 198
  27. 250
  28. 137
  29. 209
  30. 208
  31. 245
  32. 226
  33. 282
  34. 146
  35. 169
  36. 83
  37. 173
  38. 172
  39. 219
  40. 233

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