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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 209 · 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. 1.17 + 19 + 52 + 74 =
  2. 2.61 + 24 + 58 + 55 =
  3. 3.14 + 21 + 50 + 36 =
  4. 4.54 + 84 + 16 + 59 =
  5. 5.83 + 32 + 13 + 16 =
  6. 6.83 + 82 + 28 + 22 =
  7. 7.19 + 61 + 17 + 80 =
  8. 8.51 + 23 + 37 + 19 =
  9. 9.11 + 11 + 72 + 29 =
  10. 10.56 + 72 + 56 + 30 =
  11. 11.59 + 20 + 44 + 49 =
  12. 12.34 + 43 + 51 + 66 =
  13. 13.16 + 38 + 69 + 38 =
  14. 14.16 + 88 + 21 + 45 =
  15. 15.14 + 61 + 78 + 53 =
  16. 16.26 + 66 + 81 + 54 =
  17. 17.29 + 25 + 11 + 31 =
  18. 18.41 + 34 + 12 + 31 =
  19. 19.59 + 11 + 14 + 82 =
  20. 20.38 + 28 + 30 + 47 =
  21. 21.80 + 46 + 48 + 29 =
  22. 22.29 + 24 + 53 + 33 =
  23. 23.33 + 76 + 37 + 16 =
  24. 24.45 + 17 + 31 + 26 =
  25. 25.66 + 67 + 28 + 66 =
  26. 26.25 + 36 + 29 + 14 =
  27. 27.60 + 54 + 57 + 86 =
  28. 28.12 + 20 + 85 + 85 =
  29. 29.63 + 59 + 78 + 29 =
  30. 30.55 + 41 + 61 + 49 =
  31. 31.62 + 69 + 38 + 30 =
  32. 32.24 + 35 + 82 + 81 =
  33. 33.73 + 42 + 55 + 55 =
  34. 34.12 + 30 + 69 + 22 =
  35. 35.42 + 32 + 37 + 29 =
  36. 36.26 + 85 + 51 + 80 =
  37. 37.21 + 60 + 37 + 30 =
  38. 38.85 + 48 + 55 + 80 =
  39. 39.48 + 57 + 36 + 60 =
  40. 40.26 + 31 + 12 + 47 =

Answer key

  1. 162
  2. 198
  3. 121
  4. 213
  5. 144
  6. 215
  7. 177
  8. 130
  9. 123
  10. 214
  11. 172
  12. 194
  13. 161
  14. 170
  15. 206
  16. 227
  17. 96
  18. 118
  19. 166
  20. 143
  21. 203
  22. 139
  23. 162
  24. 119
  25. 227
  26. 104
  27. 257
  28. 202
  29. 229
  30. 206
  31. 199
  32. 222
  33. 225
  34. 133
  35. 140
  36. 242
  37. 148
  38. 268
  39. 201
  40. 116

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