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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 873 · 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. 1.30 + 62 + 52 + 76 =
  2. 2.69 + 48 + 22 + 45 =
  3. 3.29 + 81 + 59 + 54 =
  4. 4.39 + 25 + 79 + 35 =
  5. 5.79 + 58 + 74 + 67 =
  6. 6.40 + 39 + 40 + 86 =
  7. 7.41 + 72 + 31 + 29 =
  8. 8.64 + 62 + 17 + 40 =
  9. 9.25 + 77 + 58 + 60 =
  10. 10.29 + 75 + 33 + 18 =
  11. 11.78 + 28 + 17 + 75 =
  12. 12.81 + 86 + 31 + 17 =
  13. 13.70 + 72 + 51 + 16 =
  14. 14.55 + 40 + 30 + 71 =
  15. 15.14 + 18 + 84 + 44 =
  16. 16.58 + 74 + 38 + 73 =
  17. 17.39 + 12 + 81 + 26 =
  18. 18.77 + 60 + 17 + 21 =
  19. 19.25 + 34 + 42 + 87 =
  20. 20.46 + 52 + 23 + 75 =
  21. 21.45 + 75 + 39 + 12 =
  22. 22.31 + 81 + 27 + 66 =
  23. 23.12 + 84 + 29 + 43 =
  24. 24.47 + 86 + 86 + 72 =
  25. 25.57 + 38 + 32 + 75 =
  26. 26.48 + 69 + 64 + 54 =
  27. 27.49 + 87 + 54 + 23 =
  28. 28.53 + 87 + 11 + 16 =
  29. 29.79 + 28 + 42 + 42 =
  30. 30.89 + 13 + 66 + 22 =
  31. 31.63 + 86 + 86 + 19 =
  32. 32.60 + 37 + 74 + 28 =
  33. 33.28 + 40 + 16 + 73 =
  34. 34.28 + 61 + 33 + 79 =
  35. 35.36 + 27 + 89 + 69 =
  36. 36.17 + 73 + 25 + 63 =
  37. 37.45 + 26 + 22 + 77 =
  38. 38.70 + 31 + 24 + 72 =
  39. 39.26 + 60 + 22 + 44 =
  40. 40.32 + 54 + 83 + 25 =

Answer key

  1. 220
  2. 184
  3. 223
  4. 178
  5. 278
  6. 205
  7. 173
  8. 183
  9. 220
  10. 155
  11. 198
  12. 215
  13. 209
  14. 196
  15. 160
  16. 243
  17. 158
  18. 175
  19. 188
  20. 196
  21. 171
  22. 205
  23. 168
  24. 291
  25. 202
  26. 235
  27. 213
  28. 167
  29. 191
  30. 190
  31. 254
  32. 199
  33. 157
  34. 201
  35. 221
  36. 178
  37. 170
  38. 197
  39. 152
  40. 194

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