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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 734 · 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. 1.53 + 62 + 14 + 64 =
  2. 2.24 + 42 + 54 + 20 =
  3. 3.14 + 32 + 86 + 20 =
  4. 4.65 + 18 + 19 + 60 =
  5. 5.52 + 47 + 78 + 54 =
  6. 6.33 + 77 + 44 + 20 =
  7. 7.29 + 86 + 59 + 21 =
  8. 8.82 + 45 + 62 + 11 =
  9. 9.42 + 88 + 73 + 24 =
  10. 10.28 + 33 + 38 + 52 =
  11. 11.26 + 30 + 71 + 71 =
  12. 12.13 + 56 + 23 + 75 =
  13. 13.43 + 21 + 77 + 32 =
  14. 14.49 + 84 + 23 + 40 =
  15. 15.61 + 20 + 54 + 84 =
  16. 16.22 + 12 + 14 + 18 =
  17. 17.18 + 16 + 65 + 22 =
  18. 18.68 + 69 + 12 + 66 =
  19. 19.40 + 46 + 38 + 69 =
  20. 20.24 + 88 + 42 + 21 =
  21. 21.40 + 21 + 37 + 42 =
  22. 22.61 + 60 + 25 + 20 =
  23. 23.34 + 73 + 38 + 28 =
  24. 24.60 + 79 + 76 + 31 =
  25. 25.36 + 79 + 48 + 66 =
  26. 26.40 + 28 + 38 + 12 =
  27. 27.28 + 29 + 18 + 23 =
  28. 28.29 + 60 + 73 + 41 =
  29. 29.14 + 64 + 68 + 26 =
  30. 30.35 + 29 + 27 + 54 =
  31. 31.81 + 85 + 35 + 85 =
  32. 32.13 + 37 + 16 + 36 =
  33. 33.17 + 42 + 78 + 52 =
  34. 34.75 + 46 + 17 + 45 =
  35. 35.17 + 64 + 22 + 57 =
  36. 36.85 + 19 + 51 + 22 =
  37. 37.66 + 28 + 12 + 57 =
  38. 38.86 + 52 + 11 + 11 =
  39. 39.86 + 63 + 47 + 80 =
  40. 40.44 + 68 + 65 + 88 =

Answer key

  1. 193
  2. 140
  3. 152
  4. 162
  5. 231
  6. 174
  7. 195
  8. 200
  9. 227
  10. 151
  11. 198
  12. 167
  13. 173
  14. 196
  15. 219
  16. 66
  17. 121
  18. 215
  19. 193
  20. 175
  21. 140
  22. 166
  23. 173
  24. 246
  25. 229
  26. 118
  27. 98
  28. 203
  29. 172
  30. 145
  31. 286
  32. 102
  33. 189
  34. 183
  35. 160
  36. 177
  37. 163
  38. 160
  39. 276
  40. 265

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