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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 832 · 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. 1.32 + 70 + 26 + 70 =
  2. 2.27 + 79 + 63 + 63 =
  3. 3.25 + 27 + 23 + 24 =
  4. 4.65 + 60 + 59 + 13 =
  5. 5.20 + 77 + 50 + 27 =
  6. 6.51 + 51 + 72 + 28 =
  7. 7.56 + 19 + 23 + 24 =
  8. 8.38 + 85 + 30 + 86 =
  9. 9.38 + 18 + 13 + 20 =
  10. 10.56 + 58 + 78 + 51 =
  11. 11.68 + 25 + 55 + 26 =
  12. 12.64 + 14 + 84 + 60 =
  13. 13.60 + 38 + 43 + 63 =
  14. 14.55 + 33 + 75 + 68 =
  15. 15.36 + 20 + 74 + 43 =
  16. 16.14 + 15 + 23 + 70 =
  17. 17.22 + 17 + 59 + 81 =
  18. 18.82 + 25 + 39 + 50 =
  19. 19.11 + 47 + 32 + 61 =
  20. 20.19 + 14 + 32 + 29 =
  21. 21.88 + 55 + 38 + 12 =
  22. 22.65 + 27 + 69 + 46 =
  23. 23.39 + 88 + 87 + 58 =
  24. 24.74 + 39 + 75 + 52 =
  25. 25.80 + 71 + 15 + 61 =
  26. 26.51 + 70 + 15 + 78 =
  27. 27.29 + 34 + 16 + 27 =
  28. 28.26 + 52 + 57 + 52 =
  29. 29.73 + 77 + 50 + 47 =
  30. 30.47 + 49 + 87 + 67 =
  31. 31.21 + 19 + 46 + 52 =
  32. 32.77 + 65 + 82 + 17 =
  33. 33.66 + 86 + 75 + 78 =
  34. 34.27 + 72 + 62 + 46 =
  35. 35.27 + 87 + 23 + 73 =
  36. 36.81 + 59 + 81 + 35 =
  37. 37.16 + 23 + 81 + 62 =
  38. 38.33 + 49 + 15 + 89 =
  39. 39.36 + 23 + 35 + 74 =
  40. 40.71 + 53 + 52 + 77 =

Answer key

  1. 198
  2. 232
  3. 99
  4. 197
  5. 174
  6. 202
  7. 122
  8. 239
  9. 89
  10. 243
  11. 174
  12. 222
  13. 204
  14. 231
  15. 173
  16. 122
  17. 179
  18. 196
  19. 151
  20. 94
  21. 193
  22. 207
  23. 272
  24. 240
  25. 227
  26. 214
  27. 106
  28. 187
  29. 247
  30. 250
  31. 138
  32. 241
  33. 305
  34. 207
  35. 210
  36. 256
  37. 182
  38. 186
  39. 168
  40. 253

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