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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 791 · 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. 1.79 + 30 + 68 + 77 =
  2. 2.27 + 73 + 79 + 67 =
  3. 3.64 + 25 + 50 + 61 =
  4. 4.11 + 86 + 33 + 56 =
  5. 5.36 + 52 + 24 + 34 =
  6. 6.84 + 53 + 22 + 71 =
  7. 7.70 + 14 + 43 + 63 =
  8. 8.14 + 12 + 12 + 39 =
  9. 9.82 + 59 + 40 + 70 =
  10. 10.12 + 23 + 65 + 53 =
  11. 11.57 + 69 + 85 + 34 =
  12. 12.61 + 37 + 34 + 23 =
  13. 13.69 + 25 + 17 + 65 =
  14. 14.22 + 20 + 17 + 22 =
  15. 15.24 + 60 + 74 + 81 =
  16. 16.69 + 58 + 43 + 75 =
  17. 17.13 + 55 + 33 + 40 =
  18. 18.83 + 18 + 18 + 26 =
  19. 19.88 + 48 + 24 + 34 =
  20. 20.25 + 27 + 24 + 14 =
  21. 21.87 + 88 + 76 + 43 =
  22. 22.30 + 83 + 32 + 11 =
  23. 23.64 + 11 + 44 + 28 =
  24. 24.29 + 39 + 37 + 86 =
  25. 25.79 + 69 + 73 + 47 =
  26. 26.64 + 37 + 50 + 36 =
  27. 27.15 + 12 + 89 + 14 =
  28. 28.50 + 29 + 33 + 56 =
  29. 29.53 + 48 + 12 + 54 =
  30. 30.47 + 49 + 63 + 53 =
  31. 31.18 + 16 + 26 + 46 =
  32. 32.83 + 33 + 24 + 32 =
  33. 33.69 + 57 + 19 + 26 =
  34. 34.65 + 60 + 45 + 55 =
  35. 35.56 + 27 + 74 + 76 =
  36. 36.39 + 73 + 22 + 84 =
  37. 37.13 + 47 + 49 + 20 =
  38. 38.53 + 58 + 65 + 48 =
  39. 39.18 + 21 + 38 + 27 =
  40. 40.46 + 42 + 36 + 64 =

Answer key

  1. 254
  2. 246
  3. 200
  4. 186
  5. 146
  6. 230
  7. 190
  8. 77
  9. 251
  10. 153
  11. 245
  12. 155
  13. 176
  14. 81
  15. 239
  16. 245
  17. 141
  18. 145
  19. 194
  20. 90
  21. 294
  22. 156
  23. 147
  24. 191
  25. 268
  26. 187
  27. 130
  28. 168
  29. 167
  30. 212
  31. 106
  32. 172
  33. 171
  34. 225
  35. 233
  36. 218
  37. 129
  38. 224
  39. 104
  40. 188

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