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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 882 · 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 + 63 + 86 + 29 =
  2. 2.35 + 63 + 83 + 59 =
  3. 3.45 + 47 + 30 + 43 =
  4. 4.11 + 14 + 41 + 15 =
  5. 5.48 + 24 + 38 + 22 =
  6. 6.67 + 26 + 27 + 22 =
  7. 7.23 + 84 + 19 + 60 =
  8. 8.35 + 27 + 75 + 52 =
  9. 9.60 + 12 + 65 + 38 =
  10. 10.28 + 62 + 15 + 78 =
  11. 11.13 + 37 + 32 + 46 =
  12. 12.41 + 84 + 29 + 47 =
  13. 13.71 + 71 + 84 + 37 =
  14. 14.42 + 25 + 18 + 75 =
  15. 15.15 + 47 + 25 + 20 =
  16. 16.37 + 79 + 30 + 25 =
  17. 17.58 + 29 + 27 + 62 =
  18. 18.24 + 29 + 61 + 43 =
  19. 19.74 + 57 + 71 + 31 =
  20. 20.27 + 72 + 25 + 46 =
  21. 21.77 + 77 + 19 + 58 =
  22. 22.14 + 20 + 42 + 70 =
  23. 23.30 + 82 + 56 + 16 =
  24. 24.33 + 89 + 39 + 52 =
  25. 25.88 + 82 + 69 + 76 =
  26. 26.23 + 82 + 41 + 86 =
  27. 27.44 + 31 + 74 + 65 =
  28. 28.57 + 50 + 33 + 12 =
  29. 29.12 + 18 + 81 + 55 =
  30. 30.87 + 19 + 61 + 20 =
  31. 31.48 + 57 + 24 + 69 =
  32. 32.48 + 59 + 82 + 73 =
  33. 33.21 + 61 + 59 + 76 =
  34. 34.26 + 15 + 67 + 51 =
  35. 35.72 + 14 + 53 + 34 =
  36. 36.54 + 51 + 77 + 31 =
  37. 37.11 + 23 + 87 + 44 =
  38. 38.89 + 32 + 68 + 60 =
  39. 39.58 + 67 + 53 + 29 =
  40. 40.87 + 51 + 18 + 69 =

Answer key

  1. 209
  2. 240
  3. 165
  4. 81
  5. 132
  6. 142
  7. 186
  8. 189
  9. 175
  10. 183
  11. 128
  12. 201
  13. 263
  14. 160
  15. 107
  16. 171
  17. 176
  18. 157
  19. 233
  20. 170
  21. 231
  22. 146
  23. 184
  24. 213
  25. 315
  26. 232
  27. 214
  28. 152
  29. 166
  30. 187
  31. 198
  32. 262
  33. 217
  34. 159
  35. 173
  36. 213
  37. 165
  38. 249
  39. 207
  40. 225

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