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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 564 · 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. 1.69 + 67 + 22 + 16 =
  2. 2.51 + 69 + 63 + 14 =
  3. 3.77 + 34 + 86 + 50 =
  4. 4.77 + 11 + 78 + 46 =
  5. 5.19 + 78 + 44 + 15 =
  6. 6.78 + 34 + 67 + 52 =
  7. 7.43 + 31 + 68 + 42 =
  8. 8.50 + 71 + 25 + 53 =
  9. 9.78 + 25 + 28 + 71 =
  10. 10.86 + 45 + 86 + 52 =
  11. 11.31 + 52 + 12 + 43 =
  12. 12.62 + 26 + 32 + 64 =
  13. 13.21 + 76 + 54 + 22 =
  14. 14.84 + 38 + 51 + 28 =
  15. 15.67 + 41 + 47 + 42 =
  16. 16.72 + 16 + 76 + 19 =
  17. 17.24 + 81 + 47 + 52 =
  18. 18.68 + 44 + 87 + 18 =
  19. 19.64 + 32 + 24 + 68 =
  20. 20.71 + 75 + 44 + 20 =
  21. 21.17 + 11 + 20 + 71 =
  22. 22.41 + 63 + 16 + 23 =
  23. 23.48 + 46 + 73 + 64 =
  24. 24.20 + 13 + 46 + 80 =
  25. 25.14 + 55 + 28 + 86 =
  26. 26.47 + 83 + 20 + 55 =
  27. 27.27 + 22 + 11 + 88 =
  28. 28.11 + 76 + 78 + 12 =
  29. 29.70 + 39 + 73 + 51 =
  30. 30.60 + 17 + 41 + 60 =
  31. 31.47 + 30 + 74 + 70 =
  32. 32.52 + 75 + 77 + 28 =
  33. 33.46 + 60 + 51 + 49 =
  34. 34.81 + 60 + 86 + 37 =
  35. 35.12 + 18 + 62 + 13 =
  36. 36.72 + 89 + 60 + 82 =
  37. 37.42 + 47 + 17 + 58 =
  38. 38.25 + 83 + 62 + 70 =
  39. 39.49 + 72 + 13 + 41 =
  40. 40.58 + 67 + 16 + 18 =

Answer key

  1. 174
  2. 197
  3. 247
  4. 212
  5. 156
  6. 231
  7. 184
  8. 199
  9. 202
  10. 269
  11. 138
  12. 184
  13. 173
  14. 201
  15. 197
  16. 183
  17. 204
  18. 217
  19. 188
  20. 210
  21. 119
  22. 143
  23. 231
  24. 159
  25. 183
  26. 205
  27. 148
  28. 177
  29. 233
  30. 178
  31. 221
  32. 232
  33. 206
  34. 264
  35. 105
  36. 303
  37. 164
  38. 240
  39. 175
  40. 159

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