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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 592 · 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. 1.58 + 65 + 33 + 15 =
  2. 2.49 + 49 + 33 + 33 =
  3. 3.40 + 14 + 75 + 37 =
  4. 4.60 + 32 + 23 + 28 =
  5. 5.73 + 51 + 13 + 64 =
  6. 6.54 + 22 + 65 + 79 =
  7. 7.84 + 31 + 85 + 13 =
  8. 8.39 + 27 + 86 + 16 =
  9. 9.14 + 22 + 80 + 83 =
  10. 10.14 + 68 + 58 + 16 =
  11. 11.82 + 60 + 25 + 50 =
  12. 12.24 + 74 + 35 + 56 =
  13. 13.81 + 43 + 75 + 17 =
  14. 14.19 + 47 + 63 + 19 =
  15. 15.13 + 12 + 67 + 55 =
  16. 16.74 + 16 + 22 + 65 =
  17. 17.16 + 73 + 41 + 78 =
  18. 18.54 + 24 + 61 + 45 =
  19. 19.28 + 21 + 80 + 81 =
  20. 20.22 + 68 + 25 + 71 =
  21. 21.31 + 14 + 43 + 16 =
  22. 22.60 + 46 + 60 + 23 =
  23. 23.12 + 75 + 54 + 40 =
  24. 24.19 + 46 + 62 + 40 =
  25. 25.43 + 64 + 25 + 30 =
  26. 26.74 + 52 + 45 + 38 =
  27. 27.35 + 12 + 31 + 75 =
  28. 28.21 + 27 + 57 + 50 =
  29. 29.57 + 54 + 80 + 56 =
  30. 30.20 + 85 + 15 + 31 =
  31. 31.63 + 61 + 55 + 27 =
  32. 32.32 + 85 + 66 + 63 =
  33. 33.52 + 39 + 41 + 28 =
  34. 34.89 + 23 + 16 + 13 =
  35. 35.71 + 32 + 44 + 72 =
  36. 36.23 + 56 + 46 + 38 =
  37. 37.43 + 80 + 80 + 40 =
  38. 38.13 + 38 + 63 + 13 =
  39. 39.59 + 26 + 75 + 75 =
  40. 40.76 + 71 + 29 + 87 =

Answer key

  1. 171
  2. 164
  3. 166
  4. 143
  5. 201
  6. 220
  7. 213
  8. 168
  9. 199
  10. 156
  11. 217
  12. 189
  13. 216
  14. 148
  15. 147
  16. 177
  17. 208
  18. 184
  19. 210
  20. 186
  21. 104
  22. 189
  23. 181
  24. 167
  25. 162
  26. 209
  27. 153
  28. 155
  29. 247
  30. 151
  31. 206
  32. 246
  33. 160
  34. 141
  35. 219
  36. 163
  37. 243
  38. 127
  39. 235
  40. 263

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