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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 701 · 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. 1.89 + 20 + 36 + 80 =
  2. 2.72 + 32 + 22 + 86 =
  3. 3.83 + 69 + 15 + 14 =
  4. 4.14 + 78 + 62 + 11 =
  5. 5.15 + 75 + 33 + 21 =
  6. 6.18 + 12 + 20 + 80 =
  7. 7.23 + 66 + 68 + 49 =
  8. 8.52 + 87 + 33 + 44 =
  9. 9.20 + 43 + 36 + 15 =
  10. 10.51 + 82 + 11 + 52 =
  11. 11.54 + 77 + 41 + 22 =
  12. 12.45 + 20 + 81 + 78 =
  13. 13.23 + 20 + 50 + 15 =
  14. 14.53 + 89 + 23 + 53 =
  15. 15.20 + 65 + 14 + 14 =
  16. 16.40 + 76 + 69 + 17 =
  17. 17.20 + 63 + 12 + 86 =
  18. 18.15 + 74 + 49 + 23 =
  19. 19.61 + 39 + 40 + 20 =
  20. 20.64 + 35 + 59 + 69 =
  21. 21.44 + 61 + 24 + 89 =
  22. 22.73 + 25 + 42 + 53 =
  23. 23.57 + 87 + 17 + 70 =
  24. 24.34 + 13 + 51 + 28 =
  25. 25.17 + 37 + 29 + 88 =
  26. 26.34 + 44 + 16 + 79 =
  27. 27.13 + 81 + 85 + 48 =
  28. 28.53 + 74 + 23 + 75 =
  29. 29.53 + 31 + 80 + 15 =
  30. 30.15 + 83 + 73 + 21 =
  31. 31.72 + 13 + 24 + 21 =
  32. 32.22 + 64 + 76 + 68 =
  33. 33.87 + 37 + 64 + 19 =
  34. 34.57 + 68 + 55 + 50 =
  35. 35.31 + 73 + 32 + 31 =
  36. 36.62 + 63 + 55 + 12 =
  37. 37.76 + 74 + 13 + 33 =
  38. 38.17 + 38 + 15 + 72 =
  39. 39.66 + 19 + 32 + 29 =
  40. 40.80 + 17 + 24 + 62 =

Answer key

  1. 225
  2. 212
  3. 181
  4. 165
  5. 144
  6. 130
  7. 206
  8. 216
  9. 114
  10. 196
  11. 194
  12. 224
  13. 108
  14. 218
  15. 113
  16. 202
  17. 181
  18. 161
  19. 160
  20. 227
  21. 218
  22. 193
  23. 231
  24. 126
  25. 171
  26. 173
  27. 227
  28. 225
  29. 179
  30. 192
  31. 130
  32. 230
  33. 207
  34. 230
  35. 167
  36. 192
  37. 196
  38. 142
  39. 146
  40. 183

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