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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 471 · 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. 1.46 + 73 + 82 + 68 =
  2. 2.33 + 40 + 50 + 55 =
  3. 3.51 + 43 + 42 + 36 =
  4. 4.21 + 25 + 52 + 88 =
  5. 5.63 + 86 + 83 + 32 =
  6. 6.75 + 73 + 37 + 40 =
  7. 7.60 + 87 + 15 + 46 =
  8. 8.54 + 30 + 30 + 74 =
  9. 9.26 + 19 + 51 + 33 =
  10. 10.22 + 17 + 53 + 89 =
  11. 11.67 + 72 + 40 + 34 =
  12. 12.16 + 15 + 54 + 67 =
  13. 13.89 + 63 + 48 + 21 =
  14. 14.38 + 60 + 18 + 81 =
  15. 15.83 + 29 + 16 + 78 =
  16. 16.48 + 78 + 51 + 84 =
  17. 17.28 + 70 + 61 + 89 =
  18. 18.12 + 62 + 12 + 86 =
  19. 19.72 + 59 + 21 + 28 =
  20. 20.13 + 57 + 89 + 85 =
  21. 21.60 + 28 + 69 + 66 =
  22. 22.89 + 56 + 68 + 40 =
  23. 23.12 + 87 + 22 + 78 =
  24. 24.80 + 80 + 34 + 14 =
  25. 25.53 + 46 + 80 + 77 =
  26. 26.15 + 61 + 86 + 78 =
  27. 27.75 + 83 + 81 + 85 =
  28. 28.13 + 60 + 88 + 89 =
  29. 29.34 + 23 + 64 + 39 =
  30. 30.55 + 60 + 75 + 73 =
  31. 31.29 + 28 + 41 + 30 =
  32. 32.61 + 53 + 75 + 85 =
  33. 33.72 + 28 + 37 + 41 =
  34. 34.76 + 24 + 41 + 66 =
  35. 35.82 + 42 + 64 + 31 =
  36. 36.46 + 86 + 47 + 36 =
  37. 37.30 + 70 + 72 + 71 =
  38. 38.41 + 57 + 78 + 85 =
  39. 39.21 + 41 + 41 + 75 =
  40. 40.40 + 87 + 71 + 33 =

Answer key

  1. 269
  2. 178
  3. 172
  4. 186
  5. 264
  6. 225
  7. 208
  8. 188
  9. 129
  10. 181
  11. 213
  12. 152
  13. 221
  14. 197
  15. 206
  16. 261
  17. 248
  18. 172
  19. 180
  20. 244
  21. 223
  22. 253
  23. 199
  24. 208
  25. 256
  26. 240
  27. 324
  28. 250
  29. 160
  30. 263
  31. 128
  32. 274
  33. 178
  34. 207
  35. 219
  36. 215
  37. 243
  38. 261
  39. 178
  40. 231

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