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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 198 · 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. 1.30 + 82 + 19 + 41 =
  2. 2.38 + 89 + 70 + 16 =
  3. 3.59 + 16 + 14 + 72 =
  4. 4.45 + 85 + 47 + 18 =
  5. 5.51 + 37 + 31 + 80 =
  6. 6.14 + 63 + 29 + 29 =
  7. 7.11 + 34 + 18 + 36 =
  8. 8.12 + 62 + 82 + 71 =
  9. 9.13 + 74 + 44 + 88 =
  10. 10.24 + 37 + 87 + 89 =
  11. 11.41 + 12 + 75 + 62 =
  12. 12.68 + 44 + 70 + 66 =
  13. 13.20 + 82 + 27 + 16 =
  14. 14.79 + 43 + 39 + 85 =
  15. 15.37 + 86 + 88 + 31 =
  16. 16.86 + 63 + 46 + 56 =
  17. 17.88 + 34 + 22 + 39 =
  18. 18.39 + 31 + 45 + 18 =
  19. 19.14 + 12 + 44 + 86 =
  20. 20.19 + 29 + 86 + 89 =
  21. 21.60 + 67 + 23 + 21 =
  22. 22.71 + 74 + 11 + 14 =
  23. 23.15 + 42 + 88 + 48 =
  24. 24.82 + 31 + 24 + 17 =
  25. 25.64 + 42 + 56 + 34 =
  26. 26.64 + 12 + 60 + 65 =
  27. 27.23 + 87 + 39 + 16 =
  28. 28.44 + 36 + 79 + 67 =
  29. 29.52 + 31 + 86 + 65 =
  30. 30.83 + 23 + 24 + 37 =
  31. 31.73 + 41 + 30 + 31 =
  32. 32.31 + 22 + 37 + 54 =
  33. 33.45 + 35 + 20 + 11 =
  34. 34.63 + 59 + 85 + 27 =
  35. 35.22 + 72 + 47 + 12 =
  36. 36.16 + 85 + 67 + 77 =
  37. 37.15 + 74 + 53 + 19 =
  38. 38.38 + 28 + 48 + 75 =
  39. 39.64 + 82 + 32 + 12 =
  40. 40.69 + 74 + 84 + 60 =

Answer key

  1. 172
  2. 213
  3. 161
  4. 195
  5. 199
  6. 135
  7. 99
  8. 227
  9. 219
  10. 237
  11. 190
  12. 248
  13. 145
  14. 246
  15. 242
  16. 251
  17. 183
  18. 133
  19. 156
  20. 223
  21. 171
  22. 170
  23. 193
  24. 154
  25. 196
  26. 201
  27. 165
  28. 226
  29. 234
  30. 167
  31. 175
  32. 144
  33. 111
  34. 234
  35. 153
  36. 245
  37. 161
  38. 189
  39. 190
  40. 287

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