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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 757 · 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. 1.52 + 22 + 63 + 31 =
  2. 2.11 + 33 + 27 + 68 =
  3. 3.31 + 39 + 75 + 32 =
  4. 4.34 + 50 + 36 + 53 =
  5. 5.31 + 55 + 87 + 54 =
  6. 6.33 + 31 + 81 + 74 =
  7. 7.41 + 77 + 61 + 54 =
  8. 8.65 + 89 + 12 + 20 =
  9. 9.79 + 31 + 42 + 62 =
  10. 10.16 + 26 + 71 + 75 =
  11. 11.65 + 76 + 37 + 86 =
  12. 12.88 + 23 + 42 + 62 =
  13. 13.33 + 56 + 69 + 12 =
  14. 14.86 + 12 + 20 + 47 =
  15. 15.52 + 32 + 43 + 89 =
  16. 16.68 + 13 + 78 + 39 =
  17. 17.66 + 43 + 38 + 52 =
  18. 18.55 + 41 + 42 + 79 =
  19. 19.16 + 59 + 79 + 42 =
  20. 20.88 + 30 + 62 + 15 =
  21. 21.26 + 15 + 33 + 25 =
  22. 22.48 + 34 + 17 + 60 =
  23. 23.45 + 78 + 68 + 20 =
  24. 24.19 + 22 + 66 + 50 =
  25. 25.62 + 56 + 45 + 62 =
  26. 26.15 + 51 + 23 + 38 =
  27. 27.89 + 58 + 24 + 58 =
  28. 28.49 + 19 + 11 + 67 =
  29. 29.15 + 41 + 53 + 86 =
  30. 30.55 + 67 + 88 + 18 =
  31. 31.23 + 57 + 16 + 38 =
  32. 32.30 + 33 + 65 + 38 =
  33. 33.15 + 84 + 11 + 36 =
  34. 34.37 + 20 + 17 + 52 =
  35. 35.60 + 58 + 11 + 37 =
  36. 36.13 + 67 + 20 + 65 =
  37. 37.84 + 28 + 73 + 14 =
  38. 38.24 + 14 + 73 + 37 =
  39. 39.65 + 78 + 47 + 46 =
  40. 40.36 + 42 + 27 + 63 =

Answer key

  1. 168
  2. 139
  3. 177
  4. 173
  5. 227
  6. 219
  7. 233
  8. 186
  9. 214
  10. 188
  11. 264
  12. 215
  13. 170
  14. 165
  15. 216
  16. 198
  17. 199
  18. 217
  19. 196
  20. 195
  21. 99
  22. 159
  23. 211
  24. 157
  25. 225
  26. 127
  27. 229
  28. 146
  29. 195
  30. 228
  31. 134
  32. 166
  33. 146
  34. 126
  35. 166
  36. 165
  37. 199
  38. 148
  39. 236
  40. 168

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