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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 636 · 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. 1.13 + 14 + 27 + 76 =
  2. 2.44 + 74 + 41 + 42 =
  3. 3.59 + 29 + 43 + 35 =
  4. 4.81 + 38 + 55 + 23 =
  5. 5.51 + 11 + 74 + 68 =
  6. 6.14 + 76 + 16 + 63 =
  7. 7.89 + 47 + 67 + 71 =
  8. 8.60 + 22 + 12 + 35 =
  9. 9.87 + 77 + 59 + 47 =
  10. 10.77 + 43 + 28 + 69 =
  11. 11.64 + 61 + 30 + 30 =
  12. 12.81 + 29 + 14 + 88 =
  13. 13.47 + 75 + 40 + 42 =
  14. 14.44 + 69 + 70 + 20 =
  15. 15.79 + 21 + 37 + 29 =
  16. 16.60 + 19 + 85 + 86 =
  17. 17.68 + 72 + 66 + 82 =
  18. 18.23 + 40 + 88 + 75 =
  19. 19.12 + 74 + 22 + 54 =
  20. 20.69 + 34 + 81 + 18 =
  21. 21.48 + 30 + 54 + 44 =
  22. 22.18 + 23 + 13 + 78 =
  23. 23.12 + 31 + 34 + 64 =
  24. 24.62 + 32 + 32 + 82 =
  25. 25.42 + 75 + 84 + 46 =
  26. 26.50 + 36 + 83 + 34 =
  27. 27.72 + 88 + 45 + 74 =
  28. 28.52 + 71 + 61 + 39 =
  29. 29.38 + 46 + 62 + 19 =
  30. 30.85 + 62 + 48 + 19 =
  31. 31.88 + 16 + 26 + 60 =
  32. 32.22 + 52 + 76 + 58 =
  33. 33.38 + 32 + 41 + 61 =
  34. 34.38 + 25 + 27 + 74 =
  35. 35.79 + 30 + 66 + 16 =
  36. 36.82 + 30 + 62 + 88 =
  37. 37.85 + 76 + 15 + 77 =
  38. 38.87 + 25 + 89 + 28 =
  39. 39.68 + 16 + 24 + 73 =
  40. 40.19 + 59 + 57 + 18 =

Answer key

  1. 130
  2. 201
  3. 166
  4. 197
  5. 204
  6. 169
  7. 274
  8. 129
  9. 270
  10. 217
  11. 185
  12. 212
  13. 204
  14. 203
  15. 166
  16. 250
  17. 288
  18. 226
  19. 162
  20. 202
  21. 176
  22. 132
  23. 141
  24. 208
  25. 247
  26. 203
  27. 279
  28. 223
  29. 165
  30. 214
  31. 190
  32. 208
  33. 172
  34. 164
  35. 191
  36. 262
  37. 253
  38. 229
  39. 181
  40. 153

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