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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 261 · 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. 1.49 + 31 + 14 + 60 =
  2. 2.30 + 42 + 52 + 16 =
  3. 3.34 + 28 + 19 + 11 =
  4. 4.85 + 55 + 21 + 49 =
  5. 5.60 + 52 + 59 + 45 =
  6. 6.27 + 21 + 44 + 44 =
  7. 7.71 + 13 + 54 + 82 =
  8. 8.78 + 47 + 60 + 54 =
  9. 9.39 + 60 + 58 + 33 =
  10. 10.23 + 34 + 88 + 50 =
  11. 11.63 + 34 + 85 + 14 =
  12. 12.74 + 86 + 89 + 24 =
  13. 13.50 + 17 + 11 + 57 =
  14. 14.45 + 63 + 38 + 21 =
  15. 15.57 + 19 + 61 + 28 =
  16. 16.80 + 55 + 20 + 47 =
  17. 17.40 + 84 + 81 + 28 =
  18. 18.42 + 82 + 74 + 37 =
  19. 19.57 + 80 + 88 + 80 =
  20. 20.24 + 64 + 20 + 47 =
  21. 21.26 + 77 + 18 + 67 =
  22. 22.61 + 71 + 61 + 37 =
  23. 23.18 + 79 + 61 + 15 =
  24. 24.44 + 44 + 25 + 40 =
  25. 25.13 + 53 + 75 + 25 =
  26. 26.72 + 71 + 21 + 33 =
  27. 27.61 + 39 + 82 + 44 =
  28. 28.60 + 33 + 43 + 11 =
  29. 29.20 + 16 + 77 + 12 =
  30. 30.51 + 23 + 31 + 44 =
  31. 31.55 + 22 + 86 + 78 =
  32. 32.56 + 89 + 74 + 75 =
  33. 33.55 + 21 + 21 + 72 =
  34. 34.70 + 54 + 62 + 87 =
  35. 35.28 + 66 + 66 + 83 =
  36. 36.75 + 60 + 34 + 28 =
  37. 37.53 + 57 + 35 + 38 =
  38. 38.51 + 24 + 81 + 21 =
  39. 39.30 + 77 + 38 + 55 =
  40. 40.21 + 38 + 54 + 28 =

Answer key

  1. 154
  2. 140
  3. 92
  4. 210
  5. 216
  6. 136
  7. 220
  8. 239
  9. 190
  10. 195
  11. 196
  12. 273
  13. 135
  14. 167
  15. 165
  16. 202
  17. 233
  18. 235
  19. 305
  20. 155
  21. 188
  22. 230
  23. 173
  24. 153
  25. 166
  26. 197
  27. 226
  28. 147
  29. 125
  30. 149
  31. 241
  32. 294
  33. 169
  34. 273
  35. 243
  36. 197
  37. 183
  38. 177
  39. 200
  40. 141

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