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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 733 · 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. 1.55 + 12 + 46 + 31 =
  2. 2.15 + 75 + 52 + 54 =
  3. 3.24 + 61 + 57 + 46 =
  4. 4.25 + 46 + 15 + 88 =
  5. 5.62 + 77 + 49 + 85 =
  6. 6.67 + 18 + 87 + 31 =
  7. 7.83 + 17 + 53 + 42 =
  8. 8.39 + 84 + 36 + 33 =
  9. 9.24 + 78 + 51 + 19 =
  10. 10.80 + 26 + 76 + 72 =
  11. 11.20 + 87 + 11 + 21 =
  12. 12.22 + 47 + 71 + 44 =
  13. 13.59 + 23 + 59 + 39 =
  14. 14.33 + 60 + 72 + 84 =
  15. 15.22 + 33 + 53 + 29 =
  16. 16.84 + 52 + 72 + 65 =
  17. 17.78 + 41 + 86 + 40 =
  18. 18.45 + 16 + 72 + 54 =
  19. 19.59 + 50 + 38 + 19 =
  20. 20.16 + 49 + 42 + 67 =
  21. 21.41 + 85 + 80 + 51 =
  22. 22.28 + 75 + 24 + 58 =
  23. 23.13 + 78 + 59 + 51 =
  24. 24.68 + 70 + 22 + 81 =
  25. 25.49 + 47 + 35 + 11 =
  26. 26.60 + 31 + 74 + 34 =
  27. 27.35 + 60 + 63 + 49 =
  28. 28.70 + 62 + 13 + 13 =
  29. 29.14 + 66 + 47 + 19 =
  30. 30.55 + 40 + 54 + 11 =
  31. 31.85 + 87 + 25 + 14 =
  32. 32.12 + 30 + 64 + 48 =
  33. 33.37 + 89 + 25 + 84 =
  34. 34.49 + 38 + 81 + 70 =
  35. 35.83 + 31 + 76 + 45 =
  36. 36.75 + 54 + 12 + 80 =
  37. 37.30 + 23 + 14 + 53 =
  38. 38.55 + 52 + 83 + 79 =
  39. 39.11 + 67 + 55 + 47 =
  40. 40.70 + 14 + 75 + 26 =

Answer key

  1. 144
  2. 196
  3. 188
  4. 174
  5. 273
  6. 203
  7. 195
  8. 192
  9. 172
  10. 254
  11. 139
  12. 184
  13. 180
  14. 249
  15. 137
  16. 273
  17. 245
  18. 187
  19. 166
  20. 174
  21. 257
  22. 185
  23. 201
  24. 241
  25. 142
  26. 199
  27. 207
  28. 158
  29. 146
  30. 160
  31. 211
  32. 154
  33. 235
  34. 238
  35. 235
  36. 221
  37. 120
  38. 269
  39. 180
  40. 185

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