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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 113 · 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 + 31 + 28 + 69 =
  2. 2.19 + 59 + 68 + 39 =
  3. 3.75 + 68 + 72 + 14 =
  4. 4.31 + 17 + 53 + 87 =
  5. 5.29 + 38 + 30 + 47 =
  6. 6.78 + 33 + 33 + 74 =
  7. 7.48 + 42 + 58 + 32 =
  8. 8.30 + 28 + 88 + 87 =
  9. 9.43 + 15 + 34 + 34 =
  10. 10.14 + 73 + 58 + 55 =
  11. 11.63 + 40 + 76 + 84 =
  12. 12.60 + 22 + 69 + 73 =
  13. 13.63 + 85 + 54 + 35 =
  14. 14.34 + 72 + 78 + 21 =
  15. 15.81 + 48 + 21 + 57 =
  16. 16.28 + 70 + 48 + 72 =
  17. 17.60 + 75 + 23 + 78 =
  18. 18.20 + 59 + 35 + 89 =
  19. 19.17 + 16 + 64 + 78 =
  20. 20.23 + 86 + 53 + 40 =
  21. 21.57 + 40 + 75 + 35 =
  22. 22.11 + 16 + 23 + 28 =
  23. 23.19 + 22 + 23 + 38 =
  24. 24.66 + 28 + 66 + 70 =
  25. 25.77 + 71 + 39 + 82 =
  26. 26.39 + 15 + 39 + 18 =
  27. 27.52 + 50 + 86 + 60 =
  28. 28.63 + 34 + 78 + 13 =
  29. 29.55 + 27 + 57 + 87 =
  30. 30.53 + 28 + 62 + 14 =
  31. 31.61 + 28 + 66 + 26 =
  32. 32.74 + 61 + 19 + 34 =
  33. 33.44 + 56 + 41 + 29 =
  34. 34.46 + 22 + 19 + 64 =
  35. 35.25 + 14 + 19 + 38 =
  36. 36.68 + 53 + 72 + 27 =
  37. 37.29 + 43 + 46 + 25 =
  38. 38.12 + 26 + 64 + 71 =
  39. 39.11 + 35 + 55 + 63 =
  40. 40.33 + 63 + 72 + 41 =

Answer key

  1. 180
  2. 185
  3. 229
  4. 188
  5. 144
  6. 218
  7. 180
  8. 233
  9. 126
  10. 200
  11. 263
  12. 224
  13. 237
  14. 205
  15. 207
  16. 218
  17. 236
  18. 203
  19. 175
  20. 202
  21. 207
  22. 78
  23. 102
  24. 230
  25. 269
  26. 111
  27. 248
  28. 188
  29. 226
  30. 157
  31. 181
  32. 188
  33. 170
  34. 151
  35. 96
  36. 220
  37. 143
  38. 173
  39. 164
  40. 209

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