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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 965 · 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. 1.56 + 19 + 67 + 54 =
  2. 2.52 + 80 + 83 + 14 =
  3. 3.66 + 54 + 46 + 19 =
  4. 4.37 + 87 + 29 + 78 =
  5. 5.50 + 62 + 65 + 32 =
  6. 6.62 + 61 + 71 + 61 =
  7. 7.18 + 80 + 30 + 24 =
  8. 8.24 + 17 + 62 + 22 =
  9. 9.29 + 85 + 20 + 86 =
  10. 10.45 + 58 + 32 + 21 =
  11. 11.82 + 14 + 28 + 43 =
  12. 12.73 + 33 + 42 + 42 =
  13. 13.28 + 21 + 82 + 79 =
  14. 14.42 + 32 + 38 + 42 =
  15. 15.24 + 69 + 57 + 77 =
  16. 16.14 + 11 + 50 + 43 =
  17. 17.45 + 82 + 31 + 68 =
  18. 18.80 + 27 + 87 + 84 =
  19. 19.44 + 18 + 17 + 17 =
  20. 20.22 + 20 + 62 + 48 =
  21. 21.73 + 38 + 71 + 69 =
  22. 22.17 + 46 + 39 + 50 =
  23. 23.69 + 23 + 18 + 15 =
  24. 24.49 + 25 + 51 + 42 =
  25. 25.70 + 59 + 61 + 49 =
  26. 26.76 + 65 + 55 + 64 =
  27. 27.55 + 29 + 35 + 34 =
  28. 28.54 + 16 + 88 + 63 =
  29. 29.13 + 87 + 43 + 21 =
  30. 30.89 + 50 + 79 + 19 =
  31. 31.24 + 76 + 65 + 46 =
  32. 32.48 + 64 + 57 + 39 =
  33. 33.57 + 29 + 14 + 45 =
  34. 34.77 + 46 + 85 + 12 =
  35. 35.62 + 13 + 74 + 60 =
  36. 36.40 + 36 + 65 + 73 =
  37. 37.44 + 49 + 22 + 81 =
  38. 38.54 + 30 + 68 + 28 =
  39. 39.63 + 81 + 42 + 49 =
  40. 40.22 + 11 + 28 + 70 =

Answer key

  1. 196
  2. 229
  3. 185
  4. 231
  5. 209
  6. 255
  7. 152
  8. 125
  9. 220
  10. 156
  11. 167
  12. 190
  13. 210
  14. 154
  15. 227
  16. 118
  17. 226
  18. 278
  19. 96
  20. 152
  21. 251
  22. 152
  23. 125
  24. 167
  25. 239
  26. 260
  27. 153
  28. 221
  29. 164
  30. 237
  31. 211
  32. 208
  33. 145
  34. 220
  35. 209
  36. 214
  37. 196
  38. 180
  39. 235
  40. 131

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