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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 317 · 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. 1.77 + 68 + 77 + 70 =
  2. 2.25 + 88 + 31 + 77 =
  3. 3.72 + 72 + 21 + 21 =
  4. 4.54 + 11 + 12 + 23 =
  5. 5.32 + 36 + 31 + 40 =
  6. 6.19 + 72 + 87 + 39 =
  7. 7.56 + 20 + 27 + 49 =
  8. 8.23 + 17 + 74 + 38 =
  9. 9.17 + 17 + 49 + 54 =
  10. 10.40 + 26 + 30 + 27 =
  11. 11.54 + 87 + 28 + 30 =
  12. 12.54 + 20 + 73 + 80 =
  13. 13.20 + 73 + 51 + 75 =
  14. 14.45 + 81 + 14 + 72 =
  15. 15.67 + 18 + 44 + 78 =
  16. 16.68 + 70 + 14 + 19 =
  17. 17.84 + 19 + 89 + 19 =
  18. 18.32 + 89 + 25 + 88 =
  19. 19.61 + 17 + 89 + 15 =
  20. 20.60 + 86 + 33 + 22 =
  21. 21.16 + 13 + 16 + 62 =
  22. 22.62 + 16 + 21 + 31 =
  23. 23.42 + 28 + 19 + 68 =
  24. 24.17 + 42 + 28 + 22 =
  25. 25.44 + 61 + 24 + 42 =
  26. 26.53 + 33 + 87 + 33 =
  27. 27.30 + 19 + 13 + 54 =
  28. 28.54 + 76 + 49 + 41 =
  29. 29.59 + 46 + 88 + 40 =
  30. 30.37 + 58 + 32 + 46 =
  31. 31.64 + 18 + 63 + 66 =
  32. 32.40 + 18 + 23 + 77 =
  33. 33.20 + 87 + 35 + 45 =
  34. 34.31 + 85 + 46 + 14 =
  35. 35.61 + 29 + 76 + 83 =
  36. 36.51 + 73 + 87 + 37 =
  37. 37.58 + 60 + 44 + 67 =
  38. 38.69 + 33 + 57 + 75 =
  39. 39.58 + 39 + 22 + 23 =
  40. 40.41 + 67 + 22 + 56 =

Answer key

  1. 292
  2. 221
  3. 186
  4. 100
  5. 139
  6. 217
  7. 152
  8. 152
  9. 137
  10. 123
  11. 199
  12. 227
  13. 219
  14. 212
  15. 207
  16. 171
  17. 211
  18. 234
  19. 182
  20. 201
  21. 107
  22. 130
  23. 157
  24. 109
  25. 171
  26. 206
  27. 116
  28. 220
  29. 233
  30. 173
  31. 211
  32. 158
  33. 187
  34. 176
  35. 249
  36. 248
  37. 229
  38. 234
  39. 142
  40. 186

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