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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 934 · 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. 1.62 + 52 + 37 + 81 =
  2. 2.13 + 62 + 48 + 20 =
  3. 3.75 + 82 + 14 + 24 =
  4. 4.67 + 13 + 50 + 39 =
  5. 5.52 + 14 + 72 + 31 =
  6. 6.26 + 65 + 77 + 11 =
  7. 7.33 + 72 + 43 + 17 =
  8. 8.64 + 22 + 81 + 11 =
  9. 9.19 + 43 + 38 + 18 =
  10. 10.11 + 61 + 66 + 84 =
  11. 11.53 + 15 + 17 + 87 =
  12. 12.45 + 14 + 63 + 34 =
  13. 13.28 + 26 + 63 + 26 =
  14. 14.77 + 89 + 33 + 26 =
  15. 15.61 + 77 + 18 + 22 =
  16. 16.35 + 28 + 59 + 49 =
  17. 17.33 + 86 + 64 + 37 =
  18. 18.82 + 60 + 55 + 22 =
  19. 19.84 + 84 + 21 + 13 =
  20. 20.83 + 83 + 14 + 31 =
  21. 21.21 + 62 + 45 + 13 =
  22. 22.12 + 52 + 77 + 12 =
  23. 23.62 + 65 + 45 + 53 =
  24. 24.80 + 60 + 62 + 15 =
  25. 25.65 + 58 + 48 + 18 =
  26. 26.77 + 73 + 31 + 54 =
  27. 27.82 + 11 + 82 + 16 =
  28. 28.32 + 59 + 40 + 20 =
  29. 29.84 + 87 + 27 + 75 =
  30. 30.62 + 22 + 35 + 82 =
  31. 31.40 + 13 + 50 + 54 =
  32. 32.73 + 85 + 21 + 35 =
  33. 33.32 + 50 + 19 + 14 =
  34. 34.14 + 87 + 17 + 39 =
  35. 35.73 + 75 + 25 + 50 =
  36. 36.53 + 82 + 89 + 17 =
  37. 37.56 + 55 + 63 + 83 =
  38. 38.13 + 54 + 50 + 35 =
  39. 39.48 + 14 + 89 + 25 =
  40. 40.75 + 17 + 82 + 41 =

Answer key

  1. 232
  2. 143
  3. 195
  4. 169
  5. 169
  6. 179
  7. 165
  8. 178
  9. 118
  10. 222
  11. 172
  12. 156
  13. 143
  14. 225
  15. 178
  16. 171
  17. 220
  18. 219
  19. 202
  20. 211
  21. 141
  22. 153
  23. 225
  24. 217
  25. 189
  26. 235
  27. 191
  28. 151
  29. 273
  30. 201
  31. 157
  32. 214
  33. 115
  34. 157
  35. 223
  36. 241
  37. 257
  38. 152
  39. 176
  40. 215

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