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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 118 · 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. 1.61 + 28 + 47 + 32 =
  2. 2.78 + 42 + 31 + 16 =
  3. 3.26 + 73 + 87 + 67 =
  4. 4.68 + 11 + 47 + 67 =
  5. 5.61 + 17 + 58 + 47 =
  6. 6.38 + 80 + 50 + 30 =
  7. 7.68 + 27 + 72 + 37 =
  8. 8.79 + 40 + 15 + 86 =
  9. 9.24 + 31 + 87 + 66 =
  10. 10.75 + 37 + 53 + 50 =
  11. 11.54 + 78 + 27 + 38 =
  12. 12.57 + 54 + 63 + 27 =
  13. 13.60 + 36 + 56 + 64 =
  14. 14.36 + 11 + 34 + 13 =
  15. 15.25 + 29 + 60 + 71 =
  16. 16.29 + 65 + 21 + 63 =
  17. 17.29 + 42 + 48 + 57 =
  18. 18.17 + 79 + 46 + 64 =
  19. 19.33 + 38 + 39 + 37 =
  20. 20.37 + 75 + 63 + 45 =
  21. 21.86 + 37 + 80 + 13 =
  22. 22.66 + 62 + 62 + 19 =
  23. 23.20 + 86 + 86 + 57 =
  24. 24.80 + 85 + 85 + 81 =
  25. 25.29 + 25 + 47 + 15 =
  26. 26.65 + 16 + 18 + 64 =
  27. 27.34 + 86 + 16 + 27 =
  28. 28.62 + 59 + 70 + 50 =
  29. 29.27 + 60 + 11 + 80 =
  30. 30.76 + 66 + 69 + 76 =
  31. 31.88 + 26 + 41 + 31 =
  32. 32.11 + 37 + 67 + 50 =
  33. 33.57 + 66 + 37 + 81 =
  34. 34.69 + 34 + 53 + 24 =
  35. 35.27 + 51 + 12 + 72 =
  36. 36.27 + 37 + 16 + 88 =
  37. 37.78 + 88 + 20 + 52 =
  38. 38.56 + 37 + 47 + 50 =
  39. 39.42 + 16 + 67 + 28 =
  40. 40.22 + 52 + 41 + 22 =

Answer key

  1. 168
  2. 167
  3. 253
  4. 193
  5. 183
  6. 198
  7. 204
  8. 220
  9. 208
  10. 215
  11. 197
  12. 201
  13. 216
  14. 94
  15. 185
  16. 178
  17. 176
  18. 206
  19. 147
  20. 220
  21. 216
  22. 209
  23. 249
  24. 331
  25. 116
  26. 163
  27. 163
  28. 241
  29. 178
  30. 287
  31. 186
  32. 165
  33. 241
  34. 180
  35. 162
  36. 168
  37. 238
  38. 190
  39. 153
  40. 137

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