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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 685 · 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. 1.80 + 68 + 33 + 50 =
  2. 2.68 + 21 + 66 + 81 =
  3. 3.27 + 66 + 23 + 77 =
  4. 4.79 + 27 + 17 + 51 =
  5. 5.44 + 20 + 84 + 57 =
  6. 6.45 + 29 + 39 + 80 =
  7. 7.72 + 28 + 77 + 16 =
  8. 8.35 + 46 + 19 + 14 =
  9. 9.27 + 67 + 18 + 30 =
  10. 10.21 + 81 + 66 + 13 =
  11. 11.41 + 43 + 23 + 65 =
  12. 12.32 + 19 + 62 + 13 =
  13. 13.74 + 25 + 12 + 47 =
  14. 14.50 + 25 + 51 + 43 =
  15. 15.54 + 44 + 68 + 12 =
  16. 16.23 + 17 + 40 + 48 =
  17. 17.20 + 57 + 68 + 63 =
  18. 18.22 + 76 + 25 + 21 =
  19. 19.52 + 37 + 34 + 17 =
  20. 20.34 + 49 + 22 + 57 =
  21. 21.68 + 67 + 35 + 65 =
  22. 22.27 + 64 + 49 + 56 =
  23. 23.88 + 40 + 54 + 19 =
  24. 24.19 + 21 + 38 + 24 =
  25. 25.83 + 13 + 29 + 44 =
  26. 26.23 + 88 + 67 + 22 =
  27. 27.13 + 65 + 75 + 41 =
  28. 28.36 + 34 + 31 + 33 =
  29. 29.30 + 69 + 25 + 43 =
  30. 30.17 + 57 + 21 + 59 =
  31. 31.68 + 22 + 76 + 19 =
  32. 32.60 + 69 + 87 + 69 =
  33. 33.87 + 25 + 49 + 82 =
  34. 34.27 + 46 + 52 + 28 =
  35. 35.33 + 28 + 17 + 46 =
  36. 36.33 + 67 + 63 + 55 =
  37. 37.24 + 58 + 75 + 89 =
  38. 38.66 + 83 + 53 + 79 =
  39. 39.49 + 47 + 64 + 81 =
  40. 40.51 + 65 + 28 + 35 =

Answer key

  1. 231
  2. 236
  3. 193
  4. 174
  5. 205
  6. 193
  7. 193
  8. 114
  9. 142
  10. 181
  11. 172
  12. 126
  13. 158
  14. 169
  15. 178
  16. 128
  17. 208
  18. 144
  19. 140
  20. 162
  21. 235
  22. 196
  23. 201
  24. 102
  25. 169
  26. 200
  27. 194
  28. 134
  29. 167
  30. 154
  31. 185
  32. 285
  33. 243
  34. 153
  35. 124
  36. 218
  37. 246
  38. 281
  39. 241
  40. 179

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