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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 836 · 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. 1.31 + 53 + 71 + 88 =
  2. 2.81 + 62 + 89 + 30 =
  3. 3.41 + 57 + 82 + 46 =
  4. 4.26 + 89 + 29 + 89 =
  5. 5.41 + 89 + 53 + 16 =
  6. 6.73 + 19 + 75 + 46 =
  7. 7.31 + 38 + 71 + 47 =
  8. 8.38 + 72 + 41 + 18 =
  9. 9.76 + 59 + 59 + 75 =
  10. 10.14 + 88 + 17 + 75 =
  11. 11.30 + 35 + 54 + 85 =
  12. 12.31 + 34 + 67 + 74 =
  13. 13.62 + 78 + 12 + 68 =
  14. 14.84 + 89 + 12 + 43 =
  15. 15.81 + 74 + 35 + 25 =
  16. 16.49 + 47 + 63 + 12 =
  17. 17.70 + 15 + 32 + 44 =
  18. 18.15 + 60 + 46 + 33 =
  19. 19.30 + 68 + 49 + 44 =
  20. 20.74 + 32 + 17 + 69 =
  21. 21.71 + 25 + 37 + 84 =
  22. 22.79 + 60 + 85 + 57 =
  23. 23.87 + 26 + 31 + 76 =
  24. 24.84 + 73 + 57 + 39 =
  25. 25.84 + 56 + 32 + 73 =
  26. 26.67 + 24 + 66 + 24 =
  27. 27.16 + 47 + 22 + 59 =
  28. 28.63 + 56 + 79 + 46 =
  29. 29.56 + 80 + 43 + 66 =
  30. 30.79 + 27 + 82 + 87 =
  31. 31.25 + 77 + 32 + 20 =
  32. 32.36 + 41 + 55 + 77 =
  33. 33.31 + 83 + 40 + 20 =
  34. 34.88 + 59 + 19 + 60 =
  35. 35.19 + 64 + 68 + 16 =
  36. 36.13 + 61 + 62 + 62 =
  37. 37.51 + 11 + 50 + 42 =
  38. 38.74 + 61 + 57 + 37 =
  39. 39.82 + 78 + 33 + 41 =
  40. 40.37 + 87 + 32 + 14 =

Answer key

  1. 243
  2. 262
  3. 226
  4. 233
  5. 199
  6. 213
  7. 187
  8. 169
  9. 269
  10. 194
  11. 204
  12. 206
  13. 220
  14. 228
  15. 215
  16. 171
  17. 161
  18. 154
  19. 191
  20. 192
  21. 217
  22. 281
  23. 220
  24. 253
  25. 245
  26. 181
  27. 144
  28. 244
  29. 245
  30. 275
  31. 154
  32. 209
  33. 174
  34. 226
  35. 167
  36. 198
  37. 154
  38. 229
  39. 234
  40. 170

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