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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 823 · 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. 1.17 + 36 + 49 + 11 =
  2. 2.55 + 16 + 16 + 86 =
  3. 3.86 + 72 + 42 + 24 =
  4. 4.66 + 84 + 39 + 80 =
  5. 5.40 + 77 + 70 + 81 =
  6. 6.49 + 35 + 62 + 17 =
  7. 7.55 + 30 + 15 + 68 =
  8. 8.87 + 38 + 32 + 55 =
  9. 9.22 + 17 + 39 + 37 =
  10. 10.63 + 42 + 76 + 23 =
  11. 11.26 + 70 + 66 + 12 =
  12. 12.53 + 30 + 30 + 14 =
  13. 13.40 + 28 + 30 + 17 =
  14. 14.23 + 80 + 64 + 54 =
  15. 15.23 + 76 + 75 + 32 =
  16. 16.49 + 36 + 52 + 36 =
  17. 17.36 + 24 + 16 + 38 =
  18. 18.29 + 46 + 23 + 87 =
  19. 19.72 + 82 + 34 + 27 =
  20. 20.58 + 77 + 17 + 57 =
  21. 21.17 + 44 + 21 + 46 =
  22. 22.89 + 45 + 86 + 75 =
  23. 23.52 + 78 + 50 + 49 =
  24. 24.77 + 33 + 54 + 19 =
  25. 25.54 + 84 + 74 + 66 =
  26. 26.59 + 41 + 87 + 22 =
  27. 27.52 + 34 + 81 + 26 =
  28. 28.38 + 63 + 14 + 40 =
  29. 29.25 + 79 + 16 + 41 =
  30. 30.27 + 31 + 52 + 28 =
  31. 31.68 + 83 + 65 + 32 =
  32. 32.75 + 30 + 66 + 22 =
  33. 33.29 + 48 + 63 + 51 =
  34. 34.32 + 56 + 43 + 12 =
  35. 35.11 + 66 + 52 + 68 =
  36. 36.59 + 39 + 53 + 63 =
  37. 37.25 + 28 + 23 + 23 =
  38. 38.20 + 68 + 26 + 35 =
  39. 39.75 + 31 + 73 + 36 =
  40. 40.51 + 16 + 61 + 80 =

Answer key

  1. 113
  2. 173
  3. 224
  4. 269
  5. 268
  6. 163
  7. 168
  8. 212
  9. 115
  10. 204
  11. 174
  12. 127
  13. 115
  14. 221
  15. 206
  16. 173
  17. 114
  18. 185
  19. 215
  20. 209
  21. 128
  22. 295
  23. 229
  24. 183
  25. 278
  26. 209
  27. 193
  28. 155
  29. 161
  30. 138
  31. 248
  32. 193
  33. 191
  34. 143
  35. 197
  36. 214
  37. 99
  38. 149
  39. 215
  40. 208

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