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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 739 · 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. 1.34 + 87 + 24 + 52 =
  2. 2.84 + 88 + 62 + 67 =
  3. 3.22 + 44 + 78 + 19 =
  4. 4.79 + 48 + 85 + 52 =
  5. 5.60 + 33 + 36 + 65 =
  6. 6.64 + 67 + 35 + 26 =
  7. 7.87 + 55 + 71 + 65 =
  8. 8.39 + 61 + 20 + 52 =
  9. 9.78 + 45 + 33 + 19 =
  10. 10.40 + 86 + 52 + 19 =
  11. 11.58 + 79 + 86 + 23 =
  12. 12.32 + 32 + 20 + 38 =
  13. 13.22 + 37 + 51 + 53 =
  14. 14.70 + 89 + 23 + 31 =
  15. 15.53 + 44 + 52 + 18 =
  16. 16.16 + 86 + 80 + 69 =
  17. 17.57 + 36 + 54 + 48 =
  18. 18.27 + 48 + 78 + 64 =
  19. 19.16 + 86 + 67 + 28 =
  20. 20.51 + 41 + 82 + 75 =
  21. 21.55 + 53 + 80 + 84 =
  22. 22.28 + 28 + 35 + 36 =
  23. 23.57 + 28 + 53 + 11 =
  24. 24.19 + 35 + 11 + 39 =
  25. 25.36 + 61 + 65 + 55 =
  26. 26.59 + 52 + 66 + 80 =
  27. 27.14 + 22 + 13 + 24 =
  28. 28.31 + 81 + 62 + 39 =
  29. 29.12 + 53 + 22 + 59 =
  30. 30.68 + 62 + 44 + 47 =
  31. 31.41 + 51 + 56 + 63 =
  32. 32.11 + 84 + 86 + 84 =
  33. 33.44 + 62 + 16 + 61 =
  34. 34.33 + 68 + 48 + 64 =
  35. 35.71 + 28 + 61 + 12 =
  36. 36.22 + 21 + 31 + 75 =
  37. 37.47 + 19 + 13 + 25 =
  38. 38.52 + 63 + 41 + 65 =
  39. 39.28 + 89 + 25 + 16 =
  40. 40.25 + 33 + 45 + 57 =

Answer key

  1. 197
  2. 301
  3. 163
  4. 264
  5. 194
  6. 192
  7. 278
  8. 172
  9. 175
  10. 197
  11. 246
  12. 122
  13. 163
  14. 213
  15. 167
  16. 251
  17. 195
  18. 217
  19. 197
  20. 249
  21. 272
  22. 127
  23. 149
  24. 104
  25. 217
  26. 257
  27. 73
  28. 213
  29. 146
  30. 221
  31. 211
  32. 265
  33. 183
  34. 213
  35. 172
  36. 149
  37. 104
  38. 221
  39. 158
  40. 160

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