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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 224 · 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. 1.78 + 28 + 18 + 41 =
  2. 2.82 + 45 + 49 + 11 =
  3. 3.22 + 72 + 68 + 34 =
  4. 4.63 + 76 + 52 + 16 =
  5. 5.38 + 37 + 64 + 89 =
  6. 6.49 + 76 + 48 + 22 =
  7. 7.69 + 33 + 33 + 64 =
  8. 8.22 + 20 + 15 + 53 =
  9. 9.40 + 59 + 32 + 20 =
  10. 10.54 + 64 + 87 + 80 =
  11. 11.86 + 50 + 46 + 60 =
  12. 12.68 + 24 + 22 + 34 =
  13. 13.43 + 88 + 47 + 54 =
  14. 14.49 + 40 + 37 + 44 =
  15. 15.86 + 56 + 66 + 36 =
  16. 16.40 + 24 + 59 + 63 =
  17. 17.36 + 12 + 25 + 60 =
  18. 18.47 + 51 + 36 + 25 =
  19. 19.14 + 15 + 48 + 50 =
  20. 20.46 + 15 + 47 + 29 =
  21. 21.59 + 54 + 40 + 28 =
  22. 22.12 + 26 + 24 + 22 =
  23. 23.46 + 67 + 72 + 67 =
  24. 24.87 + 64 + 51 + 36 =
  25. 25.62 + 33 + 59 + 78 =
  26. 26.60 + 48 + 74 + 85 =
  27. 27.16 + 23 + 11 + 86 =
  28. 28.69 + 12 + 45 + 54 =
  29. 29.39 + 48 + 18 + 82 =
  30. 30.17 + 25 + 54 + 39 =
  31. 31.84 + 88 + 38 + 81 =
  32. 32.72 + 43 + 65 + 46 =
  33. 33.12 + 16 + 35 + 48 =
  34. 34.35 + 74 + 26 + 54 =
  35. 35.37 + 12 + 82 + 13 =
  36. 36.50 + 32 + 68 + 72 =
  37. 37.25 + 60 + 79 + 19 =
  38. 38.12 + 11 + 87 + 19 =
  39. 39.22 + 16 + 38 + 49 =
  40. 40.62 + 37 + 16 + 82 =

Answer key

  1. 165
  2. 187
  3. 196
  4. 207
  5. 228
  6. 195
  7. 199
  8. 110
  9. 151
  10. 285
  11. 242
  12. 148
  13. 232
  14. 170
  15. 244
  16. 186
  17. 133
  18. 159
  19. 127
  20. 137
  21. 181
  22. 84
  23. 252
  24. 238
  25. 232
  26. 267
  27. 136
  28. 180
  29. 187
  30. 135
  31. 291
  32. 226
  33. 111
  34. 189
  35. 144
  36. 222
  37. 183
  38. 129
  39. 125
  40. 197

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