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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 127 · 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. 1.54 + 52 + 53 + 19 =
  2. 2.50 + 66 + 51 + 44 =
  3. 3.72 + 82 + 77 + 41 =
  4. 4.65 + 67 + 58 + 53 =
  5. 5.82 + 64 + 49 + 17 =
  6. 6.36 + 36 + 51 + 29 =
  7. 7.72 + 57 + 31 + 25 =
  8. 8.42 + 20 + 67 + 85 =
  9. 9.36 + 32 + 16 + 53 =
  10. 10.25 + 15 + 64 + 81 =
  11. 11.13 + 72 + 30 + 45 =
  12. 12.33 + 22 + 12 + 29 =
  13. 13.35 + 79 + 19 + 23 =
  14. 14.15 + 44 + 58 + 77 =
  15. 15.86 + 22 + 19 + 77 =
  16. 16.51 + 48 + 75 + 40 =
  17. 17.40 + 19 + 39 + 31 =
  18. 18.43 + 22 + 23 + 12 =
  19. 19.35 + 35 + 32 + 69 =
  20. 20.14 + 72 + 82 + 60 =
  21. 21.23 + 78 + 44 + 17 =
  22. 22.21 + 65 + 60 + 73 =
  23. 23.77 + 89 + 12 + 78 =
  24. 24.31 + 65 + 46 + 81 =
  25. 25.28 + 36 + 84 + 53 =
  26. 26.27 + 75 + 58 + 80 =
  27. 27.49 + 57 + 19 + 28 =
  28. 28.62 + 29 + 14 + 16 =
  29. 29.23 + 30 + 36 + 83 =
  30. 30.75 + 22 + 12 + 53 =
  31. 31.72 + 49 + 61 + 84 =
  32. 32.30 + 18 + 17 + 42 =
  33. 33.22 + 64 + 66 + 31 =
  34. 34.19 + 57 + 35 + 79 =
  35. 35.71 + 53 + 66 + 13 =
  36. 36.65 + 60 + 42 + 43 =
  37. 37.50 + 68 + 64 + 76 =
  38. 38.83 + 48 + 31 + 12 =
  39. 39.75 + 81 + 87 + 74 =
  40. 40.12 + 22 + 16 + 82 =

Answer key

  1. 178
  2. 211
  3. 272
  4. 243
  5. 212
  6. 152
  7. 185
  8. 214
  9. 137
  10. 185
  11. 160
  12. 96
  13. 156
  14. 194
  15. 204
  16. 214
  17. 129
  18. 100
  19. 171
  20. 228
  21. 162
  22. 219
  23. 256
  24. 223
  25. 201
  26. 240
  27. 153
  28. 121
  29. 172
  30. 162
  31. 266
  32. 107
  33. 183
  34. 190
  35. 203
  36. 210
  37. 258
  38. 174
  39. 317
  40. 132

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