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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 195 · 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. 1.13 + 80 + 73 + 36 =
  2. 2.73 + 15 + 18 + 42 =
  3. 3.44 + 89 + 21 + 36 =
  4. 4.27 + 71 + 15 + 62 =
  5. 5.20 + 59 + 59 + 33 =
  6. 6.15 + 75 + 30 + 44 =
  7. 7.36 + 51 + 81 + 84 =
  8. 8.15 + 55 + 50 + 32 =
  9. 9.26 + 40 + 62 + 87 =
  10. 10.33 + 56 + 89 + 71 =
  11. 11.76 + 72 + 13 + 47 =
  12. 12.52 + 57 + 25 + 12 =
  13. 13.43 + 34 + 56 + 75 =
  14. 14.82 + 87 + 45 + 34 =
  15. 15.85 + 72 + 21 + 31 =
  16. 16.26 + 14 + 57 + 68 =
  17. 17.89 + 28 + 86 + 76 =
  18. 18.21 + 43 + 80 + 22 =
  19. 19.86 + 84 + 58 + 88 =
  20. 20.41 + 11 + 50 + 34 =
  21. 21.41 + 57 + 18 + 19 =
  22. 22.81 + 58 + 80 + 80 =
  23. 23.60 + 58 + 12 + 51 =
  24. 24.24 + 86 + 29 + 11 =
  25. 25.25 + 66 + 26 + 73 =
  26. 26.24 + 24 + 76 + 82 =
  27. 27.41 + 75 + 72 + 52 =
  28. 28.74 + 16 + 73 + 38 =
  29. 29.54 + 20 + 11 + 69 =
  30. 30.38 + 28 + 80 + 83 =
  31. 31.17 + 52 + 25 + 87 =
  32. 32.73 + 38 + 34 + 25 =
  33. 33.49 + 74 + 35 + 52 =
  34. 34.70 + 42 + 71 + 78 =
  35. 35.20 + 71 + 29 + 81 =
  36. 36.17 + 20 + 37 + 33 =
  37. 37.44 + 68 + 34 + 76 =
  38. 38.48 + 30 + 15 + 41 =
  39. 39.13 + 47 + 81 + 27 =
  40. 40.19 + 83 + 42 + 65 =

Answer key

  1. 202
  2. 148
  3. 190
  4. 175
  5. 171
  6. 164
  7. 252
  8. 152
  9. 215
  10. 249
  11. 208
  12. 146
  13. 208
  14. 248
  15. 209
  16. 165
  17. 279
  18. 166
  19. 316
  20. 136
  21. 135
  22. 299
  23. 181
  24. 150
  25. 190
  26. 206
  27. 240
  28. 201
  29. 154
  30. 229
  31. 181
  32. 170
  33. 210
  34. 261
  35. 201
  36. 107
  37. 222
  38. 134
  39. 168
  40. 209

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