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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 696 · 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. 1.67 + 37 + 43 + 45 =
  2. 2.83 + 50 + 23 + 39 =
  3. 3.11 + 74 + 76 + 56 =
  4. 4.79 + 22 + 72 + 42 =
  5. 5.83 + 13 + 89 + 13 =
  6. 6.72 + 62 + 60 + 34 =
  7. 7.15 + 41 + 16 + 52 =
  8. 8.53 + 58 + 41 + 67 =
  9. 9.86 + 43 + 45 + 55 =
  10. 10.89 + 64 + 22 + 16 =
  11. 11.72 + 73 + 60 + 87 =
  12. 12.37 + 87 + 23 + 19 =
  13. 13.42 + 37 + 20 + 76 =
  14. 14.48 + 25 + 19 + 78 =
  15. 15.63 + 30 + 64 + 71 =
  16. 16.66 + 14 + 17 + 51 =
  17. 17.60 + 30 + 27 + 22 =
  18. 18.35 + 47 + 17 + 32 =
  19. 19.83 + 15 + 24 + 33 =
  20. 20.69 + 45 + 62 + 13 =
  21. 21.36 + 51 + 13 + 14 =
  22. 22.28 + 42 + 33 + 41 =
  23. 23.64 + 49 + 24 + 18 =
  24. 24.42 + 68 + 61 + 34 =
  25. 25.50 + 46 + 71 + 77 =
  26. 26.14 + 53 + 82 + 49 =
  27. 27.54 + 58 + 73 + 89 =
  28. 28.83 + 71 + 12 + 74 =
  29. 29.14 + 52 + 65 + 71 =
  30. 30.49 + 40 + 62 + 73 =
  31. 31.58 + 58 + 62 + 17 =
  32. 32.78 + 12 + 17 + 59 =
  33. 33.58 + 19 + 41 + 59 =
  34. 34.18 + 23 + 14 + 35 =
  35. 35.77 + 68 + 16 + 66 =
  36. 36.31 + 48 + 66 + 61 =
  37. 37.81 + 75 + 28 + 57 =
  38. 38.18 + 73 + 78 + 55 =
  39. 39.25 + 69 + 43 + 67 =
  40. 40.26 + 25 + 70 + 81 =

Answer key

  1. 192
  2. 195
  3. 217
  4. 215
  5. 198
  6. 228
  7. 124
  8. 219
  9. 229
  10. 191
  11. 292
  12. 166
  13. 175
  14. 170
  15. 228
  16. 148
  17. 139
  18. 131
  19. 155
  20. 189
  21. 114
  22. 144
  23. 155
  24. 205
  25. 244
  26. 198
  27. 274
  28. 240
  29. 202
  30. 224
  31. 195
  32. 166
  33. 177
  34. 90
  35. 227
  36. 206
  37. 241
  38. 224
  39. 204
  40. 202

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