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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 631 · 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 + 74 + 45 + 37 =
  2. 2.30 + 80 + 31 + 60 =
  3. 3.32 + 46 + 86 + 17 =
  4. 4.15 + 30 + 62 + 20 =
  5. 5.76 + 45 + 49 + 33 =
  6. 6.11 + 11 + 38 + 11 =
  7. 7.38 + 74 + 61 + 34 =
  8. 8.70 + 88 + 25 + 53 =
  9. 9.36 + 85 + 56 + 15 =
  10. 10.55 + 42 + 11 + 67 =
  11. 11.13 + 73 + 25 + 60 =
  12. 12.26 + 24 + 68 + 43 =
  13. 13.11 + 57 + 64 + 25 =
  14. 14.37 + 71 + 65 + 29 =
  15. 15.56 + 36 + 14 + 17 =
  16. 16.16 + 64 + 42 + 77 =
  17. 17.84 + 28 + 32 + 12 =
  18. 18.55 + 71 + 86 + 18 =
  19. 19.89 + 14 + 63 + 89 =
  20. 20.52 + 14 + 63 + 29 =
  21. 21.55 + 20 + 51 + 71 =
  22. 22.69 + 47 + 22 + 36 =
  23. 23.18 + 74 + 24 + 64 =
  24. 24.11 + 29 + 45 + 58 =
  25. 25.13 + 22 + 27 + 29 =
  26. 26.68 + 47 + 82 + 72 =
  27. 27.39 + 81 + 22 + 30 =
  28. 28.27 + 16 + 56 + 64 =
  29. 29.72 + 73 + 64 + 22 =
  30. 30.18 + 80 + 51 + 28 =
  31. 31.39 + 77 + 63 + 31 =
  32. 32.58 + 71 + 52 + 42 =
  33. 33.38 + 56 + 64 + 50 =
  34. 34.56 + 31 + 22 + 53 =
  35. 35.70 + 29 + 37 + 69 =
  36. 36.42 + 24 + 81 + 70 =
  37. 37.18 + 12 + 62 + 62 =
  38. 38.43 + 12 + 33 + 15 =
  39. 39.48 + 47 + 45 + 33 =
  40. 40.52 + 84 + 15 + 27 =

Answer key

  1. 218
  2. 201
  3. 181
  4. 127
  5. 203
  6. 71
  7. 207
  8. 236
  9. 192
  10. 175
  11. 171
  12. 161
  13. 157
  14. 202
  15. 123
  16. 199
  17. 156
  18. 230
  19. 255
  20. 158
  21. 197
  22. 174
  23. 180
  24. 143
  25. 91
  26. 269
  27. 172
  28. 163
  29. 231
  30. 177
  31. 210
  32. 223
  33. 208
  34. 162
  35. 205
  36. 217
  37. 154
  38. 103
  39. 173
  40. 178

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