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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 906 · 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. 1.55 + 77 + 57 + 23 =
  2. 2.59 + 38 + 54 + 51 =
  3. 3.29 + 68 + 24 + 26 =
  4. 4.12 + 20 + 51 + 23 =
  5. 5.85 + 34 + 49 + 32 =
  6. 6.33 + 37 + 54 + 68 =
  7. 7.16 + 35 + 52 + 69 =
  8. 8.71 + 42 + 38 + 15 =
  9. 9.18 + 50 + 52 + 56 =
  10. 10.44 + 68 + 25 + 45 =
  11. 11.25 + 57 + 26 + 80 =
  12. 12.44 + 55 + 17 + 85 =
  13. 13.25 + 18 + 42 + 27 =
  14. 14.27 + 85 + 12 + 38 =
  15. 15.57 + 36 + 52 + 83 =
  16. 16.12 + 36 + 24 + 32 =
  17. 17.17 + 88 + 20 + 84 =
  18. 18.80 + 77 + 28 + 74 =
  19. 19.54 + 61 + 83 + 39 =
  20. 20.19 + 22 + 38 + 13 =
  21. 21.46 + 52 + 74 + 78 =
  22. 22.28 + 30 + 39 + 76 =
  23. 23.28 + 19 + 71 + 28 =
  24. 24.63 + 57 + 43 + 74 =
  25. 25.77 + 53 + 80 + 77 =
  26. 26.53 + 18 + 19 + 36 =
  27. 27.15 + 24 + 72 + 48 =
  28. 28.25 + 75 + 37 + 89 =
  29. 29.36 + 34 + 40 + 26 =
  30. 30.21 + 44 + 78 + 73 =
  31. 31.15 + 51 + 69 + 31 =
  32. 32.43 + 24 + 71 + 51 =
  33. 33.71 + 59 + 70 + 72 =
  34. 34.24 + 79 + 43 + 25 =
  35. 35.63 + 11 + 83 + 77 =
  36. 36.68 + 74 + 46 + 23 =
  37. 37.38 + 60 + 46 + 31 =
  38. 38.31 + 18 + 48 + 83 =
  39. 39.27 + 13 + 23 + 67 =
  40. 40.65 + 30 + 32 + 86 =

Answer key

  1. 212
  2. 202
  3. 147
  4. 106
  5. 200
  6. 192
  7. 172
  8. 166
  9. 176
  10. 182
  11. 188
  12. 201
  13. 112
  14. 162
  15. 228
  16. 104
  17. 209
  18. 259
  19. 237
  20. 92
  21. 250
  22. 173
  23. 146
  24. 237
  25. 287
  26. 126
  27. 159
  28. 226
  29. 136
  30. 216
  31. 166
  32. 189
  33. 272
  34. 171
  35. 234
  36. 211
  37. 175
  38. 180
  39. 130
  40. 213

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