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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 133 · 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. 1.23 + 24 + 39 + 40 =
  2. 2.65 + 72 + 15 + 17 =
  3. 3.75 + 34 + 68 + 68 =
  4. 4.67 + 49 + 86 + 83 =
  5. 5.12 + 54 + 34 + 15 =
  6. 6.52 + 19 + 28 + 39 =
  7. 7.75 + 23 + 76 + 70 =
  8. 8.80 + 63 + 50 + 43 =
  9. 9.85 + 61 + 85 + 89 =
  10. 10.32 + 42 + 83 + 24 =
  11. 11.13 + 40 + 11 + 64 =
  12. 12.49 + 22 + 26 + 18 =
  13. 13.24 + 54 + 83 + 41 =
  14. 14.53 + 81 + 66 + 12 =
  15. 15.58 + 32 + 30 + 42 =
  16. 16.17 + 85 + 74 + 85 =
  17. 17.75 + 44 + 68 + 45 =
  18. 18.48 + 37 + 47 + 32 =
  19. 19.33 + 69 + 59 + 45 =
  20. 20.51 + 57 + 48 + 65 =
  21. 21.58 + 17 + 34 + 13 =
  22. 22.78 + 80 + 24 + 46 =
  23. 23.67 + 29 + 38 + 70 =
  24. 24.36 + 52 + 12 + 19 =
  25. 25.55 + 21 + 12 + 24 =
  26. 26.78 + 69 + 14 + 75 =
  27. 27.19 + 12 + 67 + 79 =
  28. 28.80 + 54 + 43 + 63 =
  29. 29.57 + 24 + 40 + 52 =
  30. 30.19 + 33 + 58 + 85 =
  31. 31.15 + 85 + 68 + 12 =
  32. 32.65 + 15 + 55 + 77 =
  33. 33.20 + 23 + 35 + 27 =
  34. 34.75 + 29 + 79 + 25 =
  35. 35.30 + 28 + 27 + 84 =
  36. 36.15 + 36 + 71 + 72 =
  37. 37.54 + 26 + 12 + 26 =
  38. 38.42 + 48 + 59 + 28 =
  39. 39.73 + 77 + 87 + 17 =
  40. 40.80 + 86 + 14 + 65 =

Answer key

  1. 126
  2. 169
  3. 245
  4. 285
  5. 115
  6. 138
  7. 244
  8. 236
  9. 320
  10. 181
  11. 128
  12. 115
  13. 202
  14. 212
  15. 162
  16. 261
  17. 232
  18. 164
  19. 206
  20. 221
  21. 122
  22. 228
  23. 204
  24. 119
  25. 112
  26. 236
  27. 177
  28. 240
  29. 173
  30. 195
  31. 180
  32. 212
  33. 105
  34. 208
  35. 169
  36. 194
  37. 118
  38. 177
  39. 254
  40. 245

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