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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 494 · 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. 1.39 + 71 + 67 + 35 =
  2. 2.22 + 43 + 25 + 53 =
  3. 3.89 + 36 + 41 + 12 =
  4. 4.73 + 76 + 87 + 64 =
  5. 5.77 + 19 + 43 + 13 =
  6. 6.81 + 15 + 41 + 31 =
  7. 7.32 + 20 + 53 + 78 =
  8. 8.45 + 20 + 28 + 19 =
  9. 9.11 + 46 + 29 + 42 =
  10. 10.79 + 25 + 73 + 13 =
  11. 11.43 + 65 + 54 + 32 =
  12. 12.56 + 72 + 55 + 50 =
  13. 13.27 + 44 + 28 + 84 =
  14. 14.71 + 14 + 21 + 67 =
  15. 15.13 + 31 + 26 + 77 =
  16. 16.35 + 37 + 62 + 82 =
  17. 17.45 + 16 + 73 + 23 =
  18. 18.43 + 42 + 32 + 35 =
  19. 19.24 + 77 + 50 + 31 =
  20. 20.37 + 53 + 58 + 40 =
  21. 21.48 + 61 + 42 + 32 =
  22. 22.49 + 19 + 74 + 50 =
  23. 23.40 + 25 + 14 + 24 =
  24. 24.63 + 24 + 52 + 19 =
  25. 25.73 + 11 + 52 + 84 =
  26. 26.59 + 18 + 45 + 33 =
  27. 27.71 + 74 + 79 + 25 =
  28. 28.50 + 26 + 37 + 82 =
  29. 29.31 + 77 + 66 + 87 =
  30. 30.55 + 84 + 45 + 12 =
  31. 31.15 + 51 + 32 + 14 =
  32. 32.31 + 23 + 50 + 40 =
  33. 33.22 + 57 + 29 + 56 =
  34. 34.46 + 11 + 73 + 31 =
  35. 35.84 + 25 + 31 + 69 =
  36. 36.57 + 48 + 29 + 66 =
  37. 37.66 + 51 + 59 + 50 =
  38. 38.60 + 27 + 48 + 51 =
  39. 39.42 + 50 + 81 + 20 =
  40. 40.50 + 12 + 66 + 88 =

Answer key

  1. 212
  2. 143
  3. 178
  4. 300
  5. 152
  6. 168
  7. 183
  8. 112
  9. 128
  10. 190
  11. 194
  12. 233
  13. 183
  14. 173
  15. 147
  16. 216
  17. 157
  18. 152
  19. 182
  20. 188
  21. 183
  22. 192
  23. 103
  24. 158
  25. 220
  26. 155
  27. 249
  28. 195
  29. 261
  30. 196
  31. 112
  32. 144
  33. 164
  34. 161
  35. 209
  36. 200
  37. 226
  38. 186
  39. 193
  40. 216

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