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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 203 · 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. 1.17 + 71 + 43 + 81 =
  2. 2.72 + 21 + 15 + 31 =
  3. 3.20 + 27 + 20 + 61 =
  4. 4.26 + 62 + 51 + 58 =
  5. 5.64 + 80 + 71 + 39 =
  6. 6.58 + 44 + 62 + 12 =
  7. 7.18 + 23 + 78 + 46 =
  8. 8.86 + 89 + 15 + 76 =
  9. 9.69 + 22 + 70 + 27 =
  10. 10.16 + 39 + 22 + 82 =
  11. 11.29 + 74 + 60 + 19 =
  12. 12.76 + 72 + 88 + 35 =
  13. 13.27 + 81 + 46 + 37 =
  14. 14.62 + 15 + 68 + 82 =
  15. 15.80 + 25 + 33 + 11 =
  16. 16.89 + 68 + 37 + 45 =
  17. 17.51 + 15 + 68 + 73 =
  18. 18.23 + 19 + 11 + 36 =
  19. 19.24 + 14 + 58 + 52 =
  20. 20.71 + 15 + 61 + 63 =
  21. 21.86 + 16 + 68 + 79 =
  22. 22.69 + 60 + 27 + 27 =
  23. 23.66 + 24 + 27 + 36 =
  24. 24.50 + 33 + 21 + 80 =
  25. 25.18 + 33 + 57 + 16 =
  26. 26.62 + 73 + 46 + 51 =
  27. 27.20 + 15 + 64 + 12 =
  28. 28.31 + 22 + 58 + 63 =
  29. 29.33 + 32 + 47 + 14 =
  30. 30.23 + 82 + 25 + 19 =
  31. 31.76 + 75 + 88 + 37 =
  32. 32.26 + 41 + 17 + 22 =
  33. 33.71 + 31 + 12 + 13 =
  34. 34.76 + 20 + 67 + 58 =
  35. 35.46 + 83 + 24 + 56 =
  36. 36.66 + 23 + 20 + 21 =
  37. 37.50 + 12 + 30 + 24 =
  38. 38.61 + 85 + 30 + 30 =
  39. 39.83 + 31 + 26 + 70 =
  40. 40.48 + 67 + 30 + 70 =

Answer key

  1. 212
  2. 139
  3. 128
  4. 197
  5. 254
  6. 176
  7. 165
  8. 266
  9. 188
  10. 159
  11. 182
  12. 271
  13. 191
  14. 227
  15. 149
  16. 239
  17. 207
  18. 89
  19. 148
  20. 210
  21. 249
  22. 183
  23. 153
  24. 184
  25. 124
  26. 232
  27. 111
  28. 174
  29. 126
  30. 149
  31. 276
  32. 106
  33. 127
  34. 221
  35. 209
  36. 130
  37. 116
  38. 206
  39. 210
  40. 215

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