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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 442 · 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. 1.50 + 50 + 54 + 47 =
  2. 2.60 + 12 + 25 + 26 =
  3. 3.69 + 21 + 69 + 42 =
  4. 4.29 + 44 + 12 + 59 =
  5. 5.87 + 60 + 43 + 14 =
  6. 6.27 + 78 + 60 + 63 =
  7. 7.53 + 46 + 36 + 72 =
  8. 8.79 + 82 + 73 + 32 =
  9. 9.12 + 81 + 76 + 24 =
  10. 10.87 + 59 + 46 + 65 =
  11. 11.37 + 74 + 86 + 14 =
  12. 12.25 + 66 + 68 + 31 =
  13. 13.78 + 39 + 11 + 53 =
  14. 14.53 + 46 + 81 + 32 =
  15. 15.12 + 48 + 51 + 30 =
  16. 16.64 + 44 + 89 + 32 =
  17. 17.63 + 18 + 21 + 85 =
  18. 18.20 + 15 + 24 + 75 =
  19. 19.30 + 43 + 27 + 87 =
  20. 20.67 + 57 + 84 + 61 =
  21. 21.56 + 69 + 17 + 18 =
  22. 22.36 + 58 + 81 + 48 =
  23. 23.17 + 53 + 41 + 82 =
  24. 24.59 + 27 + 71 + 34 =
  25. 25.14 + 29 + 80 + 14 =
  26. 26.47 + 69 + 88 + 16 =
  27. 27.82 + 38 + 74 + 24 =
  28. 28.28 + 38 + 69 + 54 =
  29. 29.35 + 11 + 27 + 57 =
  30. 30.19 + 31 + 28 + 21 =
  31. 31.80 + 33 + 75 + 11 =
  32. 32.68 + 61 + 71 + 71 =
  33. 33.58 + 84 + 22 + 68 =
  34. 34.12 + 50 + 81 + 64 =
  35. 35.82 + 84 + 19 + 16 =
  36. 36.67 + 11 + 17 + 29 =
  37. 37.41 + 87 + 34 + 82 =
  38. 38.42 + 31 + 24 + 69 =
  39. 39.51 + 80 + 35 + 14 =
  40. 40.57 + 67 + 53 + 27 =

Answer key

  1. 201
  2. 123
  3. 201
  4. 144
  5. 204
  6. 228
  7. 207
  8. 266
  9. 193
  10. 257
  11. 211
  12. 190
  13. 181
  14. 212
  15. 141
  16. 229
  17. 187
  18. 134
  19. 187
  20. 269
  21. 160
  22. 223
  23. 193
  24. 191
  25. 137
  26. 220
  27. 218
  28. 189
  29. 130
  30. 99
  31. 199
  32. 271
  33. 232
  34. 207
  35. 201
  36. 124
  37. 244
  38. 166
  39. 180
  40. 204

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