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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 577 · 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. 1.72 + 67 + 69 + 70 =
  2. 2.21 + 47 + 59 + 50 =
  3. 3.25 + 32 + 30 + 25 =
  4. 4.83 + 18 + 84 + 86 =
  5. 5.59 + 35 + 20 + 35 =
  6. 6.24 + 14 + 27 + 84 =
  7. 7.23 + 53 + 84 + 33 =
  8. 8.42 + 23 + 45 + 84 =
  9. 9.43 + 81 + 38 + 61 =
  10. 10.37 + 73 + 56 + 31 =
  11. 11.32 + 14 + 11 + 22 =
  12. 12.68 + 29 + 52 + 73 =
  13. 13.82 + 14 + 85 + 50 =
  14. 14.19 + 14 + 72 + 69 =
  15. 15.21 + 26 + 83 + 53 =
  16. 16.63 + 44 + 83 + 22 =
  17. 17.77 + 35 + 76 + 64 =
  18. 18.60 + 48 + 46 + 55 =
  19. 19.59 + 52 + 51 + 21 =
  20. 20.73 + 25 + 22 + 80 =
  21. 21.51 + 19 + 58 + 38 =
  22. 22.28 + 86 + 45 + 25 =
  23. 23.25 + 76 + 14 + 76 =
  24. 24.65 + 34 + 23 + 13 =
  25. 25.75 + 18 + 11 + 43 =
  26. 26.45 + 64 + 62 + 44 =
  27. 27.28 + 88 + 73 + 21 =
  28. 28.57 + 33 + 17 + 77 =
  29. 29.51 + 29 + 35 + 68 =
  30. 30.12 + 34 + 41 + 50 =
  31. 31.19 + 47 + 65 + 50 =
  32. 32.64 + 44 + 34 + 23 =
  33. 33.59 + 47 + 67 + 23 =
  34. 34.39 + 66 + 16 + 43 =
  35. 35.15 + 56 + 19 + 60 =
  36. 36.74 + 79 + 35 + 25 =
  37. 37.14 + 64 + 51 + 11 =
  38. 38.81 + 55 + 24 + 87 =
  39. 39.42 + 20 + 82 + 70 =
  40. 40.17 + 21 + 21 + 70 =

Answer key

  1. 278
  2. 177
  3. 112
  4. 271
  5. 149
  6. 149
  7. 193
  8. 194
  9. 223
  10. 197
  11. 79
  12. 222
  13. 231
  14. 174
  15. 183
  16. 212
  17. 252
  18. 209
  19. 183
  20. 200
  21. 166
  22. 184
  23. 191
  24. 135
  25. 147
  26. 215
  27. 210
  28. 184
  29. 183
  30. 137
  31. 181
  32. 165
  33. 196
  34. 164
  35. 150
  36. 213
  37. 140
  38. 247
  39. 214
  40. 129

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