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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 217 · 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. 1.15 + 81 + 43 + 34 =
  2. 2.82 + 46 + 27 + 33 =
  3. 3.76 + 37 + 74 + 57 =
  4. 4.59 + 38 + 16 + 18 =
  5. 5.19 + 56 + 37 + 85 =
  6. 6.34 + 59 + 54 + 66 =
  7. 7.80 + 25 + 67 + 68 =
  8. 8.11 + 69 + 81 + 53 =
  9. 9.24 + 19 + 26 + 64 =
  10. 10.80 + 48 + 27 + 14 =
  11. 11.25 + 50 + 67 + 73 =
  12. 12.25 + 13 + 31 + 22 =
  13. 13.60 + 65 + 52 + 36 =
  14. 14.81 + 11 + 60 + 79 =
  15. 15.26 + 58 + 29 + 20 =
  16. 16.20 + 24 + 77 + 27 =
  17. 17.24 + 77 + 32 + 69 =
  18. 18.21 + 16 + 58 + 88 =
  19. 19.77 + 25 + 88 + 31 =
  20. 20.35 + 89 + 54 + 16 =
  21. 21.20 + 29 + 41 + 77 =
  22. 22.36 + 19 + 44 + 38 =
  23. 23.15 + 85 + 77 + 57 =
  24. 24.35 + 65 + 54 + 38 =
  25. 25.68 + 65 + 87 + 32 =
  26. 26.83 + 56 + 22 + 45 =
  27. 27.14 + 14 + 25 + 25 =
  28. 28.73 + 18 + 79 + 25 =
  29. 29.30 + 11 + 71 + 58 =
  30. 30.40 + 59 + 11 + 40 =
  31. 31.86 + 43 + 29 + 86 =
  32. 32.16 + 17 + 87 + 73 =
  33. 33.67 + 35 + 26 + 72 =
  34. 34.83 + 24 + 72 + 79 =
  35. 35.40 + 13 + 28 + 14 =
  36. 36.55 + 32 + 78 + 58 =
  37. 37.89 + 47 + 36 + 68 =
  38. 38.37 + 67 + 31 + 75 =
  39. 39.24 + 15 + 28 + 21 =
  40. 40.88 + 29 + 64 + 38 =

Answer key

  1. 173
  2. 188
  3. 244
  4. 131
  5. 197
  6. 213
  7. 240
  8. 214
  9. 133
  10. 169
  11. 215
  12. 91
  13. 213
  14. 231
  15. 133
  16. 148
  17. 202
  18. 183
  19. 221
  20. 194
  21. 167
  22. 137
  23. 234
  24. 192
  25. 252
  26. 206
  27. 78
  28. 195
  29. 170
  30. 150
  31. 244
  32. 193
  33. 200
  34. 258
  35. 95
  36. 223
  37. 240
  38. 210
  39. 88
  40. 219

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