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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 710 · 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. 1.18 + 15 + 20 + 31 =
  2. 2.49 + 45 + 54 + 20 =
  3. 3.61 + 50 + 34 + 56 =
  4. 4.35 + 61 + 66 + 67 =
  5. 5.45 + 25 + 55 + 55 =
  6. 6.88 + 37 + 87 + 42 =
  7. 7.74 + 77 + 66 + 22 =
  8. 8.86 + 52 + 30 + 22 =
  9. 9.59 + 19 + 33 + 65 =
  10. 10.56 + 47 + 44 + 35 =
  11. 11.27 + 17 + 70 + 83 =
  12. 12.29 + 82 + 59 + 23 =
  13. 13.33 + 34 + 26 + 41 =
  14. 14.64 + 88 + 20 + 34 =
  15. 15.81 + 57 + 15 + 77 =
  16. 16.32 + 17 + 83 + 18 =
  17. 17.54 + 43 + 60 + 12 =
  18. 18.48 + 35 + 21 + 64 =
  19. 19.29 + 89 + 72 + 43 =
  20. 20.30 + 86 + 54 + 28 =
  21. 21.62 + 62 + 31 + 17 =
  22. 22.31 + 66 + 84 + 48 =
  23. 23.12 + 58 + 47 + 32 =
  24. 24.52 + 53 + 87 + 52 =
  25. 25.71 + 16 + 13 + 48 =
  26. 26.34 + 73 + 89 + 55 =
  27. 27.40 + 35 + 64 + 23 =
  28. 28.14 + 70 + 33 + 15 =
  29. 29.15 + 14 + 77 + 46 =
  30. 30.59 + 18 + 73 + 47 =
  31. 31.11 + 19 + 76 + 39 =
  32. 32.56 + 26 + 24 + 48 =
  33. 33.48 + 19 + 29 + 75 =
  34. 34.63 + 77 + 50 + 43 =
  35. 35.49 + 89 + 25 + 57 =
  36. 36.14 + 36 + 56 + 83 =
  37. 37.87 + 21 + 46 + 57 =
  38. 38.49 + 70 + 34 + 87 =
  39. 39.72 + 48 + 69 + 26 =
  40. 40.13 + 84 + 23 + 80 =

Answer key

  1. 84
  2. 168
  3. 201
  4. 229
  5. 180
  6. 254
  7. 239
  8. 190
  9. 176
  10. 182
  11. 197
  12. 193
  13. 134
  14. 206
  15. 230
  16. 150
  17. 169
  18. 168
  19. 233
  20. 198
  21. 172
  22. 229
  23. 149
  24. 244
  25. 148
  26. 251
  27. 162
  28. 132
  29. 152
  30. 197
  31. 145
  32. 154
  33. 171
  34. 233
  35. 220
  36. 189
  37. 211
  38. 240
  39. 215
  40. 200

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