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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 942 · 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. 1.68 + 24 + 36 + 48 =
  2. 2.78 + 59 + 85 + 70 =
  3. 3.68 + 88 + 35 + 76 =
  4. 4.14 + 44 + 78 + 75 =
  5. 5.50 + 59 + 61 + 44 =
  6. 6.62 + 44 + 64 + 37 =
  7. 7.33 + 81 + 18 + 26 =
  8. 8.56 + 51 + 66 + 35 =
  9. 9.14 + 49 + 36 + 15 =
  10. 10.63 + 88 + 52 + 15 =
  11. 11.41 + 66 + 70 + 73 =
  12. 12.44 + 80 + 29 + 23 =
  13. 13.31 + 30 + 18 + 59 =
  14. 14.41 + 11 + 55 + 55 =
  15. 15.45 + 35 + 69 + 39 =
  16. 16.88 + 39 + 17 + 82 =
  17. 17.55 + 85 + 88 + 33 =
  18. 18.87 + 35 + 61 + 77 =
  19. 19.80 + 35 + 24 + 67 =
  20. 20.70 + 18 + 88 + 76 =
  21. 21.53 + 17 + 82 + 48 =
  22. 22.84 + 88 + 24 + 42 =
  23. 23.54 + 57 + 70 + 49 =
  24. 24.11 + 71 + 55 + 48 =
  25. 25.77 + 60 + 75 + 56 =
  26. 26.17 + 34 + 28 + 29 =
  27. 27.11 + 56 + 61 + 29 =
  28. 28.25 + 14 + 30 + 83 =
  29. 29.32 + 63 + 55 + 44 =
  30. 30.13 + 40 + 51 + 70 =
  31. 31.70 + 46 + 86 + 38 =
  32. 32.32 + 81 + 58 + 46 =
  33. 33.43 + 32 + 76 + 78 =
  34. 34.19 + 33 + 65 + 57 =
  35. 35.56 + 46 + 11 + 58 =
  36. 36.59 + 54 + 22 + 37 =
  37. 37.77 + 48 + 26 + 59 =
  38. 38.60 + 75 + 20 + 89 =
  39. 39.23 + 30 + 62 + 17 =
  40. 40.17 + 41 + 13 + 21 =

Answer key

  1. 176
  2. 292
  3. 267
  4. 211
  5. 214
  6. 207
  7. 158
  8. 208
  9. 114
  10. 218
  11. 250
  12. 176
  13. 138
  14. 162
  15. 188
  16. 226
  17. 261
  18. 260
  19. 206
  20. 252
  21. 200
  22. 238
  23. 230
  24. 185
  25. 268
  26. 108
  27. 157
  28. 152
  29. 194
  30. 174
  31. 240
  32. 217
  33. 229
  34. 174
  35. 171
  36. 172
  37. 210
  38. 244
  39. 132
  40. 92

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