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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 562 · 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. 1.69 + 65 + 19 + 32 =
  2. 2.60 + 21 + 21 + 60 =
  3. 3.44 + 70 + 34 + 70 =
  4. 4.47 + 20 + 18 + 71 =
  5. 5.62 + 82 + 36 + 41 =
  6. 6.40 + 33 + 47 + 50 =
  7. 7.76 + 27 + 24 + 75 =
  8. 8.24 + 14 + 12 + 49 =
  9. 9.31 + 29 + 56 + 27 =
  10. 10.17 + 11 + 83 + 26 =
  11. 11.26 + 81 + 67 + 37 =
  12. 12.35 + 82 + 15 + 23 =
  13. 13.55 + 31 + 47 + 51 =
  14. 14.87 + 45 + 54 + 49 =
  15. 15.25 + 63 + 55 + 84 =
  16. 16.16 + 14 + 34 + 66 =
  17. 17.62 + 37 + 44 + 49 =
  18. 18.35 + 46 + 77 + 76 =
  19. 19.22 + 46 + 84 + 71 =
  20. 20.30 + 51 + 36 + 13 =
  21. 21.34 + 79 + 82 + 73 =
  22. 22.56 + 39 + 70 + 37 =
  23. 23.58 + 74 + 23 + 27 =
  24. 24.73 + 23 + 74 + 84 =
  25. 25.24 + 46 + 47 + 61 =
  26. 26.63 + 56 + 43 + 33 =
  27. 27.18 + 14 + 25 + 68 =
  28. 28.13 + 87 + 43 + 88 =
  29. 29.69 + 73 + 66 + 30 =
  30. 30.54 + 35 + 22 + 30 =
  31. 31.84 + 57 + 34 + 62 =
  32. 32.63 + 18 + 13 + 33 =
  33. 33.37 + 40 + 33 + 50 =
  34. 34.81 + 19 + 37 + 27 =
  35. 35.80 + 33 + 77 + 56 =
  36. 36.49 + 53 + 24 + 73 =
  37. 37.37 + 70 + 76 + 17 =
  38. 38.50 + 49 + 60 + 64 =
  39. 39.41 + 42 + 76 + 76 =
  40. 40.22 + 69 + 56 + 67 =

Answer key

  1. 185
  2. 162
  3. 218
  4. 156
  5. 221
  6. 170
  7. 202
  8. 99
  9. 143
  10. 137
  11. 211
  12. 155
  13. 184
  14. 235
  15. 227
  16. 130
  17. 192
  18. 234
  19. 223
  20. 130
  21. 268
  22. 202
  23. 182
  24. 254
  25. 178
  26. 195
  27. 125
  28. 231
  29. 238
  30. 141
  31. 237
  32. 127
  33. 160
  34. 164
  35. 246
  36. 199
  37. 200
  38. 223
  39. 235
  40. 214

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