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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 985 · 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. 1.19 + 74 + 46 + 63 =
  2. 2.14 + 35 + 86 + 14 =
  3. 3.77 + 18 + 43 + 33 =
  4. 4.72 + 56 + 53 + 68 =
  5. 5.65 + 70 + 12 + 19 =
  6. 6.67 + 47 + 56 + 17 =
  7. 7.82 + 33 + 15 + 43 =
  8. 8.12 + 19 + 65 + 60 =
  9. 9.81 + 34 + 15 + 21 =
  10. 10.43 + 49 + 79 + 82 =
  11. 11.73 + 15 + 47 + 22 =
  12. 12.11 + 48 + 51 + 64 =
  13. 13.79 + 26 + 30 + 85 =
  14. 14.86 + 38 + 33 + 56 =
  15. 15.72 + 11 + 68 + 80 =
  16. 16.46 + 71 + 44 + 17 =
  17. 17.86 + 24 + 71 + 80 =
  18. 18.63 + 28 + 71 + 86 =
  19. 19.86 + 64 + 69 + 84 =
  20. 20.64 + 56 + 47 + 12 =
  21. 21.82 + 47 + 45 + 28 =
  22. 22.55 + 80 + 77 + 15 =
  23. 23.46 + 53 + 29 + 88 =
  24. 24.41 + 54 + 86 + 12 =
  25. 25.34 + 64 + 34 + 71 =
  26. 26.42 + 58 + 84 + 69 =
  27. 27.26 + 15 + 76 + 29 =
  28. 28.57 + 42 + 61 + 65 =
  29. 29.49 + 73 + 22 + 86 =
  30. 30.52 + 54 + 67 + 50 =
  31. 31.75 + 48 + 58 + 15 =
  32. 32.79 + 50 + 12 + 19 =
  33. 33.74 + 51 + 43 + 45 =
  34. 34.20 + 17 + 38 + 42 =
  35. 35.66 + 45 + 85 + 75 =
  36. 36.11 + 39 + 34 + 84 =
  37. 37.13 + 32 + 53 + 67 =
  38. 38.74 + 63 + 41 + 45 =
  39. 39.80 + 26 + 33 + 22 =
  40. 40.26 + 20 + 14 + 22 =

Answer key

  1. 202
  2. 149
  3. 171
  4. 249
  5. 166
  6. 187
  7. 173
  8. 156
  9. 151
  10. 253
  11. 157
  12. 174
  13. 220
  14. 213
  15. 231
  16. 178
  17. 261
  18. 248
  19. 303
  20. 179
  21. 202
  22. 227
  23. 216
  24. 193
  25. 203
  26. 253
  27. 146
  28. 225
  29. 230
  30. 223
  31. 196
  32. 160
  33. 213
  34. 117
  35. 271
  36. 168
  37. 165
  38. 223
  39. 161
  40. 82

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