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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 576 · 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. 1.43 + 78 + 77 + 69 =
  2. 2.44 + 85 + 68 + 17 =
  3. 3.77 + 89 + 56 + 45 =
  4. 4.63 + 30 + 76 + 63 =
  5. 5.73 + 49 + 50 + 33 =
  6. 6.48 + 31 + 65 + 13 =
  7. 7.81 + 63 + 71 + 26 =
  8. 8.54 + 31 + 75 + 33 =
  9. 9.47 + 78 + 75 + 80 =
  10. 10.29 + 27 + 53 + 31 =
  11. 11.19 + 76 + 27 + 56 =
  12. 12.37 + 57 + 29 + 83 =
  13. 13.17 + 24 + 12 + 21 =
  14. 14.80 + 26 + 88 + 27 =
  15. 15.65 + 39 + 88 + 63 =
  16. 16.84 + 47 + 37 + 15 =
  17. 17.27 + 15 + 13 + 14 =
  18. 18.66 + 18 + 62 + 80 =
  19. 19.25 + 60 + 12 + 61 =
  20. 20.20 + 58 + 49 + 68 =
  21. 21.19 + 26 + 54 + 53 =
  22. 22.45 + 13 + 22 + 59 =
  23. 23.82 + 28 + 37 + 80 =
  24. 24.43 + 16 + 22 + 63 =
  25. 25.67 + 15 + 42 + 37 =
  26. 26.77 + 56 + 55 + 50 =
  27. 27.38 + 45 + 73 + 65 =
  28. 28.52 + 62 + 38 + 80 =
  29. 29.30 + 17 + 70 + 64 =
  30. 30.70 + 54 + 41 + 40 =
  31. 31.39 + 26 + 14 + 65 =
  32. 32.55 + 14 + 75 + 34 =
  33. 33.15 + 87 + 47 + 35 =
  34. 34.51 + 53 + 27 + 82 =
  35. 35.73 + 28 + 52 + 34 =
  36. 36.70 + 64 + 35 + 88 =
  37. 37.29 + 25 + 61 + 85 =
  38. 38.61 + 78 + 30 + 13 =
  39. 39.81 + 77 + 12 + 76 =
  40. 40.63 + 56 + 70 + 61 =

Answer key

  1. 267
  2. 214
  3. 267
  4. 232
  5. 205
  6. 157
  7. 241
  8. 193
  9. 280
  10. 140
  11. 178
  12. 206
  13. 74
  14. 221
  15. 255
  16. 183
  17. 69
  18. 226
  19. 158
  20. 195
  21. 152
  22. 139
  23. 227
  24. 144
  25. 161
  26. 238
  27. 221
  28. 232
  29. 181
  30. 205
  31. 144
  32. 178
  33. 184
  34. 213
  35. 187
  36. 257
  37. 200
  38. 182
  39. 246
  40. 250

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