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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 287 · 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. 1.73 + 24 + 64 + 41 =
  2. 2.55 + 15 + 28 + 72 =
  3. 3.83 + 11 + 63 + 29 =
  4. 4.70 + 32 + 64 + 72 =
  5. 5.68 + 78 + 87 + 67 =
  6. 6.18 + 76 + 29 + 28 =
  7. 7.35 + 67 + 16 + 19 =
  8. 8.30 + 18 + 46 + 66 =
  9. 9.14 + 80 + 75 + 25 =
  10. 10.18 + 79 + 12 + 24 =
  11. 11.71 + 57 + 86 + 72 =
  12. 12.31 + 55 + 13 + 43 =
  13. 13.51 + 58 + 39 + 27 =
  14. 14.21 + 84 + 51 + 89 =
  15. 15.54 + 88 + 50 + 71 =
  16. 16.55 + 75 + 23 + 46 =
  17. 17.81 + 81 + 25 + 62 =
  18. 18.32 + 41 + 35 + 55 =
  19. 19.73 + 44 + 25 + 27 =
  20. 20.19 + 42 + 84 + 46 =
  21. 21.28 + 84 + 50 + 59 =
  22. 22.33 + 25 + 22 + 58 =
  23. 23.57 + 88 + 43 + 37 =
  24. 24.69 + 38 + 74 + 56 =
  25. 25.57 + 60 + 30 + 74 =
  26. 26.24 + 20 + 19 + 22 =
  27. 27.23 + 59 + 66 + 31 =
  28. 28.39 + 13 + 60 + 27 =
  29. 29.30 + 16 + 40 + 56 =
  30. 30.54 + 12 + 12 + 33 =
  31. 31.68 + 51 + 75 + 23 =
  32. 32.55 + 74 + 57 + 62 =
  33. 33.11 + 49 + 27 + 45 =
  34. 34.43 + 23 + 80 + 39 =
  35. 35.51 + 51 + 34 + 47 =
  36. 36.15 + 66 + 52 + 17 =
  37. 37.44 + 23 + 58 + 30 =
  38. 38.19 + 78 + 25 + 49 =
  39. 39.22 + 81 + 60 + 69 =
  40. 40.26 + 86 + 16 + 48 =

Answer key

  1. 202
  2. 170
  3. 186
  4. 238
  5. 300
  6. 151
  7. 137
  8. 160
  9. 194
  10. 133
  11. 286
  12. 142
  13. 175
  14. 245
  15. 263
  16. 199
  17. 249
  18. 163
  19. 169
  20. 191
  21. 221
  22. 138
  23. 225
  24. 237
  25. 221
  26. 85
  27. 179
  28. 139
  29. 142
  30. 111
  31. 217
  32. 248
  33. 132
  34. 185
  35. 183
  36. 150
  37. 155
  38. 171
  39. 232
  40. 176

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