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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 619 · 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. 1.52 + 53 + 53 + 38 =
  2. 2.69 + 19 + 58 + 38 =
  3. 3.71 + 66 + 69 + 25 =
  4. 4.26 + 15 + 27 + 71 =
  5. 5.41 + 82 + 64 + 88 =
  6. 6.43 + 25 + 30 + 86 =
  7. 7.34 + 59 + 23 + 42 =
  8. 8.77 + 20 + 22 + 25 =
  9. 9.19 + 65 + 37 + 60 =
  10. 10.78 + 83 + 87 + 11 =
  11. 11.46 + 66 + 73 + 50 =
  12. 12.35 + 77 + 55 + 43 =
  13. 13.43 + 69 + 58 + 24 =
  14. 14.32 + 18 + 51 + 48 =
  15. 15.55 + 79 + 48 + 44 =
  16. 16.82 + 52 + 65 + 19 =
  17. 17.72 + 25 + 64 + 52 =
  18. 18.22 + 31 + 70 + 16 =
  19. 19.11 + 29 + 70 + 55 =
  20. 20.32 + 32 + 35 + 61 =
  21. 21.60 + 41 + 16 + 50 =
  22. 22.56 + 41 + 79 + 33 =
  23. 23.80 + 20 + 27 + 65 =
  24. 24.24 + 31 + 84 + 70 =
  25. 25.20 + 25 + 53 + 73 =
  26. 26.11 + 37 + 11 + 89 =
  27. 27.44 + 15 + 77 + 67 =
  28. 28.22 + 58 + 53 + 20 =
  29. 29.86 + 57 + 80 + 22 =
  30. 30.68 + 38 + 44 + 84 =
  31. 31.44 + 41 + 57 + 18 =
  32. 32.69 + 11 + 54 + 54 =
  33. 33.69 + 74 + 11 + 56 =
  34. 34.69 + 34 + 38 + 19 =
  35. 35.39 + 15 + 12 + 47 =
  36. 36.74 + 80 + 46 + 29 =
  37. 37.74 + 13 + 71 + 72 =
  38. 38.28 + 20 + 16 + 24 =
  39. 39.23 + 81 + 29 + 18 =
  40. 40.43 + 14 + 68 + 57 =

Answer key

  1. 196
  2. 184
  3. 231
  4. 139
  5. 275
  6. 184
  7. 158
  8. 144
  9. 181
  10. 259
  11. 235
  12. 210
  13. 194
  14. 149
  15. 226
  16. 218
  17. 213
  18. 139
  19. 165
  20. 160
  21. 167
  22. 209
  23. 192
  24. 209
  25. 171
  26. 148
  27. 203
  28. 153
  29. 245
  30. 234
  31. 160
  32. 188
  33. 210
  34. 160
  35. 113
  36. 229
  37. 230
  38. 88
  39. 151
  40. 182

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