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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 332 · 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. 1.16 + 69 + 83 + 64 =
  2. 2.20 + 37 + 71 + 80 =
  3. 3.25 + 65 + 16 + 59 =
  4. 4.30 + 38 + 86 + 26 =
  5. 5.41 + 69 + 26 + 75 =
  6. 6.27 + 47 + 62 + 17 =
  7. 7.74 + 21 + 86 + 85 =
  8. 8.47 + 32 + 83 + 62 =
  9. 9.75 + 65 + 21 + 23 =
  10. 10.31 + 38 + 60 + 38 =
  11. 11.31 + 34 + 55 + 55 =
  12. 12.29 + 24 + 20 + 39 =
  13. 13.80 + 19 + 72 + 23 =
  14. 14.48 + 47 + 63 + 20 =
  15. 15.62 + 29 + 83 + 50 =
  16. 16.71 + 17 + 81 + 57 =
  17. 17.24 + 28 + 70 + 69 =
  18. 18.61 + 17 + 81 + 35 =
  19. 19.18 + 62 + 83 + 54 =
  20. 20.11 + 78 + 63 + 39 =
  21. 21.22 + 55 + 77 + 83 =
  22. 22.63 + 43 + 12 + 62 =
  23. 23.45 + 13 + 19 + 62 =
  24. 24.86 + 44 + 53 + 80 =
  25. 25.27 + 72 + 42 + 63 =
  26. 26.65 + 40 + 63 + 77 =
  27. 27.22 + 79 + 60 + 49 =
  28. 28.23 + 29 + 45 + 69 =
  29. 29.19 + 87 + 29 + 57 =
  30. 30.48 + 53 + 52 + 18 =
  31. 31.35 + 35 + 78 + 56 =
  32. 32.41 + 75 + 75 + 58 =
  33. 33.89 + 82 + 79 + 11 =
  34. 34.63 + 20 + 11 + 31 =
  35. 35.57 + 35 + 22 + 66 =
  36. 36.63 + 25 + 23 + 73 =
  37. 37.19 + 67 + 19 + 50 =
  38. 38.55 + 23 + 27 + 87 =
  39. 39.89 + 50 + 40 + 17 =
  40. 40.66 + 72 + 51 + 57 =

Answer key

  1. 232
  2. 208
  3. 165
  4. 180
  5. 211
  6. 153
  7. 266
  8. 224
  9. 184
  10. 167
  11. 175
  12. 112
  13. 194
  14. 178
  15. 224
  16. 226
  17. 191
  18. 194
  19. 217
  20. 191
  21. 237
  22. 180
  23. 139
  24. 263
  25. 204
  26. 245
  27. 210
  28. 166
  29. 192
  30. 171
  31. 204
  32. 249
  33. 261
  34. 125
  35. 180
  36. 184
  37. 155
  38. 192
  39. 196
  40. 246

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