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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 175 · 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. 1.11 + 38 + 88 + 80 =
  2. 2.25 + 57 + 41 + 42 =
  3. 3.12 + 34 + 48 + 25 =
  4. 4.15 + 43 + 60 + 37 =
  5. 5.21 + 43 + 42 + 61 =
  6. 6.28 + 12 + 87 + 39 =
  7. 7.47 + 76 + 23 + 58 =
  8. 8.67 + 32 + 11 + 24 =
  9. 9.29 + 71 + 76 + 83 =
  10. 10.62 + 82 + 31 + 23 =
  11. 11.47 + 72 + 66 + 66 =
  12. 12.27 + 58 + 20 + 21 =
  13. 13.62 + 57 + 73 + 17 =
  14. 14.67 + 83 + 47 + 80 =
  15. 15.38 + 31 + 32 + 72 =
  16. 16.77 + 22 + 50 + 82 =
  17. 17.86 + 31 + 79 + 77 =
  18. 18.48 + 72 + 60 + 60 =
  19. 19.45 + 73 + 30 + 87 =
  20. 20.83 + 26 + 24 + 55 =
  21. 21.27 + 18 + 83 + 79 =
  22. 22.47 + 58 + 25 + 36 =
  23. 23.79 + 88 + 56 + 13 =
  24. 24.39 + 48 + 81 + 56 =
  25. 25.16 + 68 + 49 + 23 =
  26. 26.26 + 59 + 24 + 60 =
  27. 27.79 + 30 + 47 + 83 =
  28. 28.60 + 60 + 16 + 58 =
  29. 29.68 + 33 + 86 + 14 =
  30. 30.68 + 71 + 12 + 33 =
  31. 31.25 + 13 + 34 + 35 =
  32. 32.20 + 21 + 38 + 82 =
  33. 33.16 + 80 + 35 + 46 =
  34. 34.53 + 76 + 13 + 40 =
  35. 35.31 + 44 + 16 + 40 =
  36. 36.23 + 33 + 44 + 54 =
  37. 37.24 + 21 + 73 + 14 =
  38. 38.51 + 28 + 69 + 57 =
  39. 39.87 + 35 + 38 + 79 =
  40. 40.80 + 88 + 60 + 20 =

Answer key

  1. 217
  2. 165
  3. 119
  4. 155
  5. 167
  6. 166
  7. 204
  8. 134
  9. 259
  10. 198
  11. 251
  12. 126
  13. 209
  14. 277
  15. 173
  16. 231
  17. 273
  18. 240
  19. 235
  20. 188
  21. 207
  22. 166
  23. 236
  24. 224
  25. 156
  26. 169
  27. 239
  28. 194
  29. 201
  30. 184
  31. 107
  32. 161
  33. 177
  34. 182
  35. 131
  36. 154
  37. 132
  38. 205
  39. 239
  40. 248

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