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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 237 · 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. 1.35 + 63 + 28 + 61 =
  2. 2.58 + 52 + 80 + 79 =
  3. 3.73 + 85 + 64 + 41 =
  4. 4.37 + 22 + 15 + 47 =
  5. 5.88 + 49 + 30 + 76 =
  6. 6.42 + 19 + 84 + 84 =
  7. 7.67 + 77 + 16 + 12 =
  8. 8.83 + 88 + 49 + 20 =
  9. 9.34 + 44 + 66 + 39 =
  10. 10.30 + 74 + 14 + 69 =
  11. 11.29 + 79 + 13 + 89 =
  12. 12.49 + 78 + 53 + 18 =
  13. 13.20 + 11 + 58 + 22 =
  14. 14.64 + 21 + 39 + 29 =
  15. 15.14 + 14 + 35 + 42 =
  16. 16.76 + 44 + 73 + 79 =
  17. 17.69 + 69 + 36 + 54 =
  18. 18.20 + 51 + 45 + 78 =
  19. 19.61 + 54 + 33 + 31 =
  20. 20.60 + 32 + 30 + 64 =
  21. 21.79 + 28 + 17 + 44 =
  22. 22.75 + 84 + 25 + 79 =
  23. 23.66 + 19 + 19 + 62 =
  24. 24.26 + 49 + 26 + 22 =
  25. 25.42 + 64 + 82 + 16 =
  26. 26.51 + 30 + 85 + 83 =
  27. 27.71 + 78 + 75 + 80 =
  28. 28.61 + 26 + 32 + 67 =
  29. 29.34 + 43 + 64 + 17 =
  30. 30.19 + 80 + 73 + 59 =
  31. 31.17 + 57 + 32 + 62 =
  32. 32.73 + 80 + 82 + 25 =
  33. 33.49 + 61 + 74 + 17 =
  34. 34.43 + 62 + 32 + 43 =
  35. 35.23 + 46 + 85 + 66 =
  36. 36.41 + 30 + 39 + 28 =
  37. 37.64 + 37 + 70 + 42 =
  38. 38.46 + 81 + 49 + 54 =
  39. 39.74 + 13 + 22 + 27 =
  40. 40.23 + 74 + 28 + 16 =

Answer key

  1. 187
  2. 269
  3. 263
  4. 121
  5. 243
  6. 229
  7. 172
  8. 240
  9. 183
  10. 187
  11. 210
  12. 198
  13. 111
  14. 153
  15. 105
  16. 272
  17. 228
  18. 194
  19. 179
  20. 186
  21. 168
  22. 263
  23. 166
  24. 123
  25. 204
  26. 249
  27. 304
  28. 186
  29. 158
  30. 231
  31. 168
  32. 260
  33. 201
  34. 180
  35. 220
  36. 138
  37. 213
  38. 230
  39. 136
  40. 141

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