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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 638 · 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 + 71 + 57 + 63 =
  2. 2.36 + 48 + 65 + 16 =
  3. 3.84 + 19 + 64 + 62 =
  4. 4.25 + 71 + 49 + 35 =
  5. 5.27 + 58 + 51 + 13 =
  6. 6.89 + 51 + 85 + 20 =
  7. 7.46 + 34 + 13 + 58 =
  8. 8.89 + 50 + 17 + 63 =
  9. 9.52 + 32 + 43 + 32 =
  10. 10.74 + 57 + 27 + 44 =
  11. 11.54 + 88 + 33 + 47 =
  12. 12.46 + 58 + 46 + 81 =
  13. 13.74 + 85 + 65 + 67 =
  14. 14.57 + 79 + 69 + 83 =
  15. 15.89 + 15 + 79 + 87 =
  16. 16.71 + 36 + 76 + 82 =
  17. 17.18 + 55 + 19 + 29 =
  18. 18.27 + 22 + 18 + 83 =
  19. 19.33 + 81 + 65 + 89 =
  20. 20.71 + 60 + 40 + 28 =
  21. 21.69 + 12 + 56 + 67 =
  22. 22.78 + 83 + 12 + 30 =
  23. 23.65 + 26 + 68 + 77 =
  24. 24.31 + 77 + 77 + 39 =
  25. 25.26 + 68 + 81 + 57 =
  26. 26.45 + 30 + 16 + 21 =
  27. 27.39 + 34 + 36 + 62 =
  28. 28.17 + 50 + 76 + 54 =
  29. 29.19 + 82 + 83 + 23 =
  30. 30.23 + 13 + 31 + 47 =
  31. 31.41 + 89 + 25 + 37 =
  32. 32.14 + 29 + 19 + 74 =
  33. 33.51 + 44 + 73 + 32 =
  34. 34.85 + 48 + 19 + 56 =
  35. 35.49 + 20 + 44 + 12 =
  36. 36.74 + 25 + 57 + 65 =
  37. 37.67 + 32 + 23 + 30 =
  38. 38.30 + 45 + 79 + 66 =
  39. 39.56 + 62 + 62 + 47 =
  40. 40.64 + 18 + 62 + 60 =

Answer key

  1. 202
  2. 165
  3. 229
  4. 180
  5. 149
  6. 245
  7. 151
  8. 219
  9. 159
  10. 202
  11. 222
  12. 231
  13. 291
  14. 288
  15. 270
  16. 265
  17. 121
  18. 150
  19. 268
  20. 199
  21. 204
  22. 203
  23. 236
  24. 224
  25. 232
  26. 112
  27. 171
  28. 197
  29. 207
  30. 114
  31. 192
  32. 136
  33. 200
  34. 208
  35. 125
  36. 221
  37. 152
  38. 220
  39. 227
  40. 204

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