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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 714 · 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. 1.19 + 35 + 87 + 77 =
  2. 2.26 + 86 + 66 + 29 =
  3. 3.24 + 20 + 43 + 17 =
  4. 4.27 + 68 + 48 + 19 =
  5. 5.21 + 69 + 66 + 35 =
  6. 6.84 + 64 + 53 + 30 =
  7. 7.19 + 18 + 17 + 31 =
  8. 8.85 + 86 + 78 + 57 =
  9. 9.39 + 29 + 73 + 46 =
  10. 10.43 + 54 + 47 + 80 =
  11. 11.80 + 78 + 13 + 19 =
  12. 12.19 + 75 + 62 + 31 =
  13. 13.20 + 12 + 23 + 89 =
  14. 14.33 + 13 + 40 + 21 =
  15. 15.17 + 71 + 85 + 15 =
  16. 16.39 + 71 + 78 + 26 =
  17. 17.57 + 29 + 34 + 50 =
  18. 18.60 + 81 + 34 + 40 =
  19. 19.58 + 74 + 80 + 20 =
  20. 20.56 + 32 + 16 + 23 =
  21. 21.20 + 59 + 72 + 28 =
  22. 22.33 + 46 + 65 + 58 =
  23. 23.54 + 82 + 13 + 29 =
  24. 24.40 + 87 + 63 + 80 =
  25. 25.89 + 55 + 54 + 73 =
  26. 26.19 + 85 + 23 + 13 =
  27. 27.13 + 23 + 14 + 86 =
  28. 28.38 + 20 + 87 + 28 =
  29. 29.52 + 78 + 79 + 25 =
  30. 30.32 + 63 + 40 + 41 =
  31. 31.88 + 85 + 36 + 24 =
  32. 32.59 + 17 + 79 + 43 =
  33. 33.11 + 62 + 79 + 62 =
  34. 34.42 + 71 + 88 + 64 =
  35. 35.17 + 29 + 22 + 42 =
  36. 36.14 + 52 + 74 + 48 =
  37. 37.13 + 69 + 19 + 55 =
  38. 38.71 + 80 + 32 + 51 =
  39. 39.32 + 15 + 44 + 24 =
  40. 40.85 + 48 + 24 + 63 =

Answer key

  1. 218
  2. 207
  3. 104
  4. 162
  5. 191
  6. 231
  7. 85
  8. 306
  9. 187
  10. 224
  11. 190
  12. 187
  13. 144
  14. 107
  15. 188
  16. 214
  17. 170
  18. 215
  19. 232
  20. 127
  21. 179
  22. 202
  23. 178
  24. 270
  25. 271
  26. 140
  27. 136
  28. 173
  29. 234
  30. 176
  31. 233
  32. 198
  33. 214
  34. 265
  35. 110
  36. 188
  37. 156
  38. 234
  39. 115
  40. 220

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