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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 476 · 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. 1.73 + 40 + 54 + 18 =
  2. 2.18 + 66 + 11 + 60 =
  3. 3.14 + 56 + 36 + 62 =
  4. 4.56 + 57 + 49 + 33 =
  5. 5.58 + 70 + 34 + 60 =
  6. 6.11 + 57 + 58 + 24 =
  7. 7.79 + 40 + 21 + 52 =
  8. 8.25 + 78 + 44 + 18 =
  9. 9.33 + 89 + 72 + 38 =
  10. 10.58 + 74 + 64 + 54 =
  11. 11.84 + 79 + 12 + 32 =
  12. 12.34 + 33 + 33 + 61 =
  13. 13.87 + 72 + 68 + 27 =
  14. 14.78 + 38 + 36 + 61 =
  15. 15.19 + 64 + 18 + 12 =
  16. 16.24 + 27 + 12 + 54 =
  17. 17.45 + 76 + 59 + 63 =
  18. 18.25 + 34 + 47 + 20 =
  19. 19.19 + 47 + 29 + 54 =
  20. 20.30 + 68 + 53 + 40 =
  21. 21.24 + 26 + 43 + 55 =
  22. 22.65 + 25 + 67 + 60 =
  23. 23.24 + 41 + 67 + 41 =
  24. 24.85 + 74 + 62 + 43 =
  25. 25.33 + 45 + 25 + 51 =
  26. 26.77 + 83 + 29 + 84 =
  27. 27.17 + 36 + 89 + 70 =
  28. 28.16 + 71 + 29 + 46 =
  29. 29.46 + 55 + 33 + 23 =
  30. 30.41 + 83 + 82 + 32 =
  31. 31.86 + 36 + 52 + 56 =
  32. 32.36 + 55 + 75 + 65 =
  33. 33.31 + 64 + 20 + 59 =
  34. 34.45 + 45 + 48 + 89 =
  35. 35.16 + 18 + 85 + 31 =
  36. 36.85 + 53 + 13 + 88 =
  37. 37.45 + 68 + 57 + 31 =
  38. 38.29 + 76 + 26 + 85 =
  39. 39.14 + 19 + 55 + 30 =
  40. 40.78 + 47 + 84 + 31 =

Answer key

  1. 185
  2. 155
  3. 168
  4. 195
  5. 222
  6. 150
  7. 192
  8. 165
  9. 232
  10. 250
  11. 207
  12. 161
  13. 254
  14. 213
  15. 113
  16. 117
  17. 243
  18. 126
  19. 149
  20. 191
  21. 148
  22. 217
  23. 173
  24. 264
  25. 154
  26. 273
  27. 212
  28. 162
  29. 157
  30. 238
  31. 230
  32. 231
  33. 174
  34. 227
  35. 150
  36. 239
  37. 201
  38. 216
  39. 118
  40. 240

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