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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 455 · 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. 1.68 + 72 + 83 + 67 =
  2. 2.37 + 66 + 77 + 14 =
  3. 3.20 + 13 + 38 + 84 =
  4. 4.50 + 28 + 25 + 68 =
  5. 5.51 + 63 + 54 + 89 =
  6. 6.59 + 16 + 67 + 25 =
  7. 7.11 + 15 + 16 + 77 =
  8. 8.27 + 40 + 38 + 70 =
  9. 9.65 + 49 + 29 + 16 =
  10. 10.18 + 29 + 85 + 43 =
  11. 11.75 + 46 + 13 + 53 =
  12. 12.11 + 28 + 66 + 55 =
  13. 13.69 + 48 + 76 + 30 =
  14. 14.37 + 34 + 49 + 28 =
  15. 15.51 + 27 + 58 + 24 =
  16. 16.84 + 39 + 25 + 44 =
  17. 17.12 + 24 + 35 + 60 =
  18. 18.69 + 71 + 34 + 32 =
  19. 19.85 + 50 + 50 + 32 =
  20. 20.29 + 54 + 73 + 64 =
  21. 21.13 + 40 + 82 + 83 =
  22. 22.16 + 72 + 39 + 80 =
  23. 23.74 + 75 + 39 + 22 =
  24. 24.65 + 21 + 86 + 73 =
  25. 25.28 + 16 + 27 + 50 =
  26. 26.54 + 76 + 59 + 11 =
  27. 27.70 + 79 + 11 + 38 =
  28. 28.33 + 29 + 81 + 67 =
  29. 29.12 + 65 + 15 + 85 =
  30. 30.87 + 48 + 67 + 21 =
  31. 31.71 + 75 + 14 + 73 =
  32. 32.34 + 34 + 40 + 15 =
  33. 33.17 + 74 + 45 + 37 =
  34. 34.71 + 23 + 88 + 25 =
  35. 35.28 + 74 + 68 + 16 =
  36. 36.77 + 51 + 18 + 57 =
  37. 37.83 + 31 + 13 + 23 =
  38. 38.23 + 14 + 80 + 25 =
  39. 39.57 + 43 + 24 + 28 =
  40. 40.12 + 60 + 79 + 64 =

Answer key

  1. 290
  2. 194
  3. 155
  4. 171
  5. 257
  6. 167
  7. 119
  8. 175
  9. 159
  10. 175
  11. 187
  12. 160
  13. 223
  14. 148
  15. 160
  16. 192
  17. 131
  18. 206
  19. 217
  20. 220
  21. 218
  22. 207
  23. 210
  24. 245
  25. 121
  26. 200
  27. 198
  28. 210
  29. 177
  30. 223
  31. 233
  32. 123
  33. 173
  34. 207
  35. 186
  36. 203
  37. 150
  38. 142
  39. 152
  40. 215

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