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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 77 · 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. 1.36 + 43 + 14 + 34 =
  2. 2.45 + 21 + 19 + 57 =
  3. 3.41 + 83 + 78 + 40 =
  4. 4.22 + 69 + 19 + 87 =
  5. 5.44 + 52 + 86 + 31 =
  6. 6.59 + 44 + 67 + 26 =
  7. 7.15 + 30 + 83 + 53 =
  8. 8.21 + 16 + 11 + 44 =
  9. 9.45 + 15 + 84 + 44 =
  10. 10.69 + 49 + 39 + 45 =
  11. 11.29 + 26 + 88 + 39 =
  12. 12.82 + 57 + 14 + 61 =
  13. 13.89 + 76 + 19 + 26 =
  14. 14.51 + 28 + 68 + 55 =
  15. 15.32 + 49 + 30 + 28 =
  16. 16.60 + 48 + 66 + 31 =
  17. 17.38 + 32 + 52 + 75 =
  18. 18.53 + 12 + 77 + 86 =
  19. 19.30 + 45 + 19 + 79 =
  20. 20.41 + 71 + 30 + 23 =
  21. 21.45 + 23 + 26 + 21 =
  22. 22.75 + 28 + 23 + 64 =
  23. 23.30 + 32 + 31 + 83 =
  24. 24.27 + 22 + 17 + 22 =
  25. 25.61 + 16 + 18 + 22 =
  26. 26.13 + 29 + 86 + 39 =
  27. 27.59 + 44 + 76 + 41 =
  28. 28.37 + 61 + 40 + 62 =
  29. 29.84 + 62 + 54 + 62 =
  30. 30.33 + 30 + 15 + 67 =
  31. 31.67 + 88 + 27 + 18 =
  32. 32.75 + 21 + 29 + 86 =
  33. 33.17 + 40 + 68 + 60 =
  34. 34.71 + 14 + 30 + 22 =
  35. 35.83 + 42 + 87 + 62 =
  36. 36.26 + 50 + 31 + 45 =
  37. 37.78 + 27 + 85 + 63 =
  38. 38.54 + 39 + 41 + 13 =
  39. 39.13 + 83 + 68 + 77 =
  40. 40.48 + 17 + 67 + 48 =

Answer key

  1. 127
  2. 142
  3. 242
  4. 197
  5. 213
  6. 196
  7. 181
  8. 92
  9. 188
  10. 202
  11. 182
  12. 214
  13. 210
  14. 202
  15. 139
  16. 205
  17. 197
  18. 228
  19. 173
  20. 165
  21. 115
  22. 190
  23. 176
  24. 88
  25. 117
  26. 167
  27. 220
  28. 200
  29. 262
  30. 145
  31. 200
  32. 211
  33. 185
  34. 137
  35. 274
  36. 152
  37. 253
  38. 147
  39. 241
  40. 180

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