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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 493 · 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 + 23 + 32 + 34 =
  2. 2.14 + 29 + 63 + 87 =
  3. 3.71 + 43 + 83 + 43 =
  4. 4.40 + 24 + 81 + 26 =
  5. 5.55 + 86 + 13 + 54 =
  6. 6.59 + 24 + 14 + 40 =
  7. 7.30 + 60 + 26 + 65 =
  8. 8.71 + 50 + 32 + 46 =
  9. 9.49 + 81 + 19 + 47 =
  10. 10.79 + 84 + 11 + 22 =
  11. 11.22 + 32 + 19 + 88 =
  12. 12.66 + 48 + 49 + 34 =
  13. 13.39 + 71 + 62 + 56 =
  14. 14.13 + 12 + 75 + 19 =
  15. 15.50 + 48 + 78 + 37 =
  16. 16.84 + 12 + 74 + 74 =
  17. 17.35 + 79 + 76 + 34 =
  18. 18.49 + 29 + 75 + 51 =
  19. 19.12 + 44 + 63 + 33 =
  20. 20.77 + 31 + 84 + 43 =
  21. 21.11 + 55 + 75 + 14 =
  22. 22.43 + 16 + 56 + 20 =
  23. 23.38 + 89 + 42 + 34 =
  24. 24.40 + 41 + 76 + 34 =
  25. 25.13 + 77 + 34 + 23 =
  26. 26.72 + 49 + 12 + 75 =
  27. 27.38 + 63 + 42 + 16 =
  28. 28.62 + 33 + 42 + 71 =
  29. 29.15 + 40 + 27 + 24 =
  30. 30.71 + 28 + 38 + 84 =
  31. 31.38 + 80 + 36 + 24 =
  32. 32.71 + 27 + 61 + 39 =
  33. 33.83 + 24 + 28 + 13 =
  34. 34.85 + 46 + 32 + 77 =
  35. 35.58 + 46 + 80 + 52 =
  36. 36.15 + 18 + 57 + 28 =
  37. 37.53 + 11 + 39 + 65 =
  38. 38.20 + 62 + 48 + 24 =
  39. 39.18 + 56 + 72 + 76 =
  40. 40.81 + 68 + 75 + 68 =

Answer key

  1. 108
  2. 193
  3. 240
  4. 171
  5. 208
  6. 137
  7. 181
  8. 199
  9. 196
  10. 196
  11. 161
  12. 197
  13. 228
  14. 119
  15. 213
  16. 244
  17. 224
  18. 204
  19. 152
  20. 235
  21. 155
  22. 135
  23. 203
  24. 191
  25. 147
  26. 208
  27. 159
  28. 208
  29. 106
  30. 221
  31. 178
  32. 198
  33. 148
  34. 240
  35. 236
  36. 118
  37. 168
  38. 154
  39. 222
  40. 292

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