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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 916 · 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. 1.12 + 24 + 50 + 81 =
  2. 2.73 + 34 + 18 + 44 =
  3. 3.16 + 54 + 41 + 70 =
  4. 4.34 + 26 + 39 + 59 =
  5. 5.69 + 12 + 69 + 29 =
  6. 6.14 + 36 + 60 + 54 =
  7. 7.44 + 16 + 70 + 12 =
  8. 8.79 + 39 + 62 + 64 =
  9. 9.40 + 28 + 21 + 13 =
  10. 10.71 + 11 + 53 + 37 =
  11. 11.20 + 28 + 46 + 37 =
  12. 12.27 + 51 + 64 + 56 =
  13. 13.80 + 47 + 69 + 22 =
  14. 14.34 + 43 + 44 + 13 =
  15. 15.20 + 22 + 57 + 57 =
  16. 16.82 + 46 + 16 + 37 =
  17. 17.37 + 65 + 54 + 57 =
  18. 18.80 + 47 + 87 + 33 =
  19. 19.24 + 60 + 57 + 54 =
  20. 20.82 + 48 + 64 + 64 =
  21. 21.19 + 75 + 87 + 68 =
  22. 22.34 + 35 + 71 + 13 =
  23. 23.11 + 25 + 14 + 16 =
  24. 24.19 + 38 + 29 + 21 =
  25. 25.22 + 12 + 76 + 24 =
  26. 26.85 + 87 + 40 + 17 =
  27. 27.83 + 47 + 24 + 21 =
  28. 28.42 + 25 + 15 + 62 =
  29. 29.32 + 81 + 52 + 61 =
  30. 30.25 + 63 + 52 + 61 =
  31. 31.72 + 43 + 37 + 46 =
  32. 32.64 + 32 + 23 + 47 =
  33. 33.54 + 54 + 30 + 16 =
  34. 34.48 + 35 + 13 + 26 =
  35. 35.26 + 14 + 40 + 46 =
  36. 36.32 + 35 + 86 + 13 =
  37. 37.72 + 36 + 30 + 35 =
  38. 38.72 + 63 + 31 + 58 =
  39. 39.70 + 77 + 78 + 83 =
  40. 40.55 + 22 + 88 + 14 =

Answer key

  1. 167
  2. 169
  3. 181
  4. 158
  5. 179
  6. 164
  7. 142
  8. 244
  9. 102
  10. 172
  11. 131
  12. 198
  13. 218
  14. 134
  15. 156
  16. 181
  17. 213
  18. 247
  19. 195
  20. 258
  21. 249
  22. 153
  23. 66
  24. 107
  25. 134
  26. 229
  27. 175
  28. 144
  29. 226
  30. 201
  31. 198
  32. 166
  33. 154
  34. 122
  35. 126
  36. 166
  37. 173
  38. 224
  39. 308
  40. 179

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