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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 73 · 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. 1.80 + 88 + 40 + 32 =
  2. 2.52 + 45 + 23 + 56 =
  3. 3.11 + 53 + 30 + 66 =
  4. 4.34 + 76 + 88 + 56 =
  5. 5.11 + 85 + 69 + 31 =
  6. 6.69 + 50 + 46 + 29 =
  7. 7.21 + 25 + 85 + 44 =
  8. 8.27 + 79 + 12 + 68 =
  9. 9.55 + 15 + 30 + 56 =
  10. 10.31 + 19 + 86 + 24 =
  11. 11.18 + 83 + 60 + 29 =
  12. 12.23 + 37 + 72 + 83 =
  13. 13.13 + 30 + 14 + 17 =
  14. 14.30 + 79 + 48 + 79 =
  15. 15.38 + 63 + 80 + 74 =
  16. 16.78 + 38 + 74 + 31 =
  17. 17.48 + 20 + 39 + 36 =
  18. 18.39 + 47 + 73 + 25 =
  19. 19.17 + 20 + 73 + 63 =
  20. 20.72 + 71 + 59 + 15 =
  21. 21.48 + 60 + 48 + 80 =
  22. 22.13 + 66 + 20 + 87 =
  23. 23.28 + 45 + 87 + 28 =
  24. 24.70 + 43 + 68 + 32 =
  25. 25.68 + 49 + 29 + 69 =
  26. 26.35 + 46 + 28 + 78 =
  27. 27.67 + 40 + 31 + 19 =
  28. 28.73 + 27 + 59 + 17 =
  29. 29.29 + 15 + 29 + 87 =
  30. 30.27 + 69 + 76 + 81 =
  31. 31.22 + 66 + 82 + 37 =
  32. 32.38 + 33 + 76 + 12 =
  33. 33.16 + 76 + 78 + 52 =
  34. 34.49 + 61 + 42 + 61 =
  35. 35.36 + 65 + 83 + 56 =
  36. 36.80 + 71 + 35 + 85 =
  37. 37.60 + 75 + 75 + 45 =
  38. 38.32 + 44 + 78 + 45 =
  39. 39.43 + 80 + 18 + 12 =
  40. 40.88 + 39 + 36 + 36 =

Answer key

  1. 240
  2. 176
  3. 160
  4. 254
  5. 196
  6. 194
  7. 175
  8. 186
  9. 156
  10. 160
  11. 190
  12. 215
  13. 74
  14. 236
  15. 255
  16. 221
  17. 143
  18. 184
  19. 173
  20. 217
  21. 236
  22. 186
  23. 188
  24. 213
  25. 215
  26. 187
  27. 157
  28. 176
  29. 160
  30. 253
  31. 207
  32. 159
  33. 222
  34. 213
  35. 240
  36. 271
  37. 255
  38. 199
  39. 153
  40. 199

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