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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 978 · 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. 1.89 + 35 + 41 + 64 =
  2. 2.31 + 23 + 63 + 75 =
  3. 3.85 + 60 + 69 + 32 =
  4. 4.50 + 51 + 86 + 67 =
  5. 5.26 + 77 + 52 + 47 =
  6. 6.26 + 54 + 78 + 12 =
  7. 7.38 + 26 + 88 + 13 =
  8. 8.11 + 69 + 62 + 60 =
  9. 9.79 + 23 + 25 + 48 =
  10. 10.42 + 46 + 26 + 82 =
  11. 11.25 + 68 + 69 + 71 =
  12. 12.74 + 85 + 83 + 14 =
  13. 13.44 + 15 + 85 + 28 =
  14. 14.14 + 21 + 23 + 39 =
  15. 15.88 + 35 + 43 + 73 =
  16. 16.15 + 86 + 75 + 58 =
  17. 17.20 + 34 + 54 + 66 =
  18. 18.81 + 60 + 31 + 28 =
  19. 19.85 + 17 + 76 + 69 =
  20. 20.65 + 87 + 35 + 70 =
  21. 21.23 + 62 + 11 + 11 =
  22. 22.54 + 73 + 55 + 77 =
  23. 23.14 + 40 + 56 + 55 =
  24. 24.59 + 50 + 62 + 88 =
  25. 25.30 + 88 + 14 + 85 =
  26. 26.83 + 62 + 39 + 77 =
  27. 27.61 + 84 + 21 + 17 =
  28. 28.35 + 78 + 31 + 81 =
  29. 29.81 + 33 + 32 + 40 =
  30. 30.41 + 45 + 47 + 70 =
  31. 31.35 + 44 + 30 + 72 =
  32. 32.13 + 67 + 61 + 64 =
  33. 33.39 + 79 + 62 + 69 =
  34. 34.70 + 25 + 15 + 12 =
  35. 35.11 + 12 + 45 + 14 =
  36. 36.26 + 80 + 50 + 39 =
  37. 37.54 + 61 + 46 + 14 =
  38. 38.55 + 85 + 56 + 77 =
  39. 39.35 + 79 + 74 + 65 =
  40. 40.74 + 76 + 81 + 89 =

Answer key

  1. 229
  2. 192
  3. 246
  4. 254
  5. 202
  6. 170
  7. 165
  8. 202
  9. 175
  10. 196
  11. 233
  12. 256
  13. 172
  14. 97
  15. 239
  16. 234
  17. 174
  18. 200
  19. 247
  20. 257
  21. 107
  22. 259
  23. 165
  24. 259
  25. 217
  26. 261
  27. 183
  28. 225
  29. 186
  30. 203
  31. 181
  32. 205
  33. 249
  34. 122
  35. 82
  36. 195
  37. 175
  38. 273
  39. 253
  40. 320

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