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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 295 · 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. 1.66 + 86 + 30 + 73 =
  2. 2.17 + 80 + 75 + 53 =
  3. 3.12 + 17 + 72 + 37 =
  4. 4.56 + 74 + 54 + 54 =
  5. 5.82 + 43 + 15 + 87 =
  6. 6.20 + 18 + 77 + 38 =
  7. 7.31 + 32 + 23 + 69 =
  8. 8.81 + 51 + 23 + 64 =
  9. 9.52 + 16 + 22 + 65 =
  10. 10.46 + 37 + 69 + 59 =
  11. 11.34 + 43 + 33 + 71 =
  12. 12.55 + 49 + 53 + 65 =
  13. 13.43 + 78 + 26 + 46 =
  14. 14.50 + 70 + 49 + 65 =
  15. 15.80 + 61 + 20 + 71 =
  16. 16.55 + 63 + 24 + 83 =
  17. 17.55 + 28 + 78 + 65 =
  18. 18.81 + 24 + 52 + 48 =
  19. 19.14 + 71 + 68 + 28 =
  20. 20.22 + 49 + 29 + 64 =
  21. 21.22 + 46 + 73 + 42 =
  22. 22.32 + 84 + 80 + 22 =
  23. 23.36 + 59 + 63 + 34 =
  24. 24.46 + 25 + 31 + 18 =
  25. 25.81 + 46 + 28 + 64 =
  26. 26.33 + 71 + 31 + 14 =
  27. 27.82 + 62 + 53 + 28 =
  28. 28.59 + 28 + 42 + 72 =
  29. 29.33 + 17 + 12 + 50 =
  30. 30.81 + 21 + 17 + 64 =
  31. 31.36 + 52 + 79 + 57 =
  32. 32.82 + 83 + 23 + 79 =
  33. 33.38 + 23 + 69 + 67 =
  34. 34.15 + 44 + 84 + 24 =
  35. 35.36 + 84 + 12 + 77 =
  36. 36.76 + 11 + 67 + 69 =
  37. 37.74 + 47 + 77 + 16 =
  38. 38.19 + 82 + 75 + 35 =
  39. 39.48 + 33 + 25 + 61 =
  40. 40.53 + 13 + 43 + 17 =

Answer key

  1. 255
  2. 225
  3. 138
  4. 238
  5. 227
  6. 153
  7. 155
  8. 219
  9. 155
  10. 211
  11. 181
  12. 222
  13. 193
  14. 234
  15. 232
  16. 225
  17. 226
  18. 205
  19. 181
  20. 164
  21. 183
  22. 218
  23. 192
  24. 120
  25. 219
  26. 149
  27. 225
  28. 201
  29. 112
  30. 183
  31. 224
  32. 267
  33. 197
  34. 167
  35. 209
  36. 223
  37. 214
  38. 211
  39. 167
  40. 126

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