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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 952 · 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. 1.26 + 55 + 79 + 30 =
  2. 2.88 + 17 + 48 + 32 =
  3. 3.74 + 26 + 16 + 19 =
  4. 4.68 + 89 + 89 + 68 =
  5. 5.31 + 69 + 49 + 84 =
  6. 6.71 + 78 + 88 + 33 =
  7. 7.85 + 75 + 37 + 76 =
  8. 8.56 + 88 + 74 + 66 =
  9. 9.84 + 19 + 22 + 12 =
  10. 10.71 + 79 + 86 + 13 =
  11. 11.81 + 59 + 34 + 28 =
  12. 12.15 + 29 + 19 + 22 =
  13. 13.80 + 67 + 76 + 23 =
  14. 14.64 + 40 + 86 + 75 =
  15. 15.89 + 52 + 40 + 67 =
  16. 16.47 + 21 + 44 + 82 =
  17. 17.89 + 84 + 57 + 57 =
  18. 18.68 + 20 + 40 + 74 =
  19. 19.14 + 13 + 54 + 63 =
  20. 20.69 + 83 + 53 + 19 =
  21. 21.52 + 64 + 28 + 14 =
  22. 22.68 + 51 + 41 + 67 =
  23. 23.44 + 75 + 11 + 74 =
  24. 24.49 + 47 + 88 + 38 =
  25. 25.71 + 52 + 19 + 14 =
  26. 26.46 + 41 + 68 + 17 =
  27. 27.73 + 25 + 17 + 13 =
  28. 28.38 + 87 + 21 + 52 =
  29. 29.82 + 20 + 45 + 52 =
  30. 30.85 + 51 + 55 + 29 =
  31. 31.78 + 33 + 43 + 35 =
  32. 32.38 + 21 + 43 + 61 =
  33. 33.33 + 24 + 17 + 33 =
  34. 34.50 + 42 + 84 + 34 =
  35. 35.68 + 88 + 51 + 83 =
  36. 36.72 + 20 + 28 + 77 =
  37. 37.48 + 73 + 44 + 71 =
  38. 38.53 + 16 + 61 + 89 =
  39. 39.88 + 41 + 83 + 86 =
  40. 40.53 + 52 + 36 + 81 =

Answer key

  1. 190
  2. 185
  3. 135
  4. 314
  5. 233
  6. 270
  7. 273
  8. 284
  9. 137
  10. 249
  11. 202
  12. 85
  13. 246
  14. 265
  15. 248
  16. 194
  17. 287
  18. 202
  19. 144
  20. 224
  21. 158
  22. 227
  23. 204
  24. 222
  25. 156
  26. 172
  27. 128
  28. 198
  29. 199
  30. 220
  31. 189
  32. 163
  33. 107
  34. 210
  35. 290
  36. 197
  37. 236
  38. 219
  39. 298
  40. 222

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