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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 703 · 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. 1.83 + 65 + 33 + 27 =
  2. 2.63 + 74 + 36 + 54 =
  3. 3.14 + 13 + 33 + 34 =
  4. 4.35 + 85 + 34 + 65 =
  5. 5.21 + 11 + 23 + 22 =
  6. 6.28 + 43 + 72 + 22 =
  7. 7.28 + 12 + 78 + 14 =
  8. 8.57 + 42 + 34 + 38 =
  9. 9.40 + 73 + 18 + 85 =
  10. 10.80 + 23 + 79 + 81 =
  11. 11.44 + 51 + 30 + 56 =
  12. 12.36 + 58 + 24 + 89 =
  13. 13.24 + 57 + 67 + 68 =
  14. 14.22 + 47 + 42 + 75 =
  15. 15.56 + 50 + 52 + 63 =
  16. 16.36 + 55 + 16 + 39 =
  17. 17.69 + 34 + 53 + 55 =
  18. 18.68 + 66 + 48 + 23 =
  19. 19.75 + 71 + 14 + 55 =
  20. 20.24 + 54 + 16 + 88 =
  21. 21.60 + 59 + 38 + 35 =
  22. 22.49 + 54 + 89 + 38 =
  23. 23.13 + 27 + 52 + 52 =
  24. 24.89 + 30 + 71 + 29 =
  25. 25.38 + 53 + 56 + 27 =
  26. 26.11 + 26 + 59 + 18 =
  27. 27.37 + 20 + 47 + 57 =
  28. 28.15 + 16 + 23 + 19 =
  29. 29.77 + 62 + 38 + 63 =
  30. 30.18 + 51 + 51 + 21 =
  31. 31.66 + 87 + 21 + 19 =
  32. 32.61 + 23 + 82 + 58 =
  33. 33.33 + 79 + 64 + 31 =
  34. 34.29 + 59 + 84 + 84 =
  35. 35.85 + 83 + 46 + 86 =
  36. 36.22 + 54 + 80 + 53 =
  37. 37.81 + 36 + 22 + 64 =
  38. 38.77 + 47 + 87 + 59 =
  39. 39.14 + 48 + 27 + 47 =
  40. 40.29 + 65 + 61 + 89 =

Answer key

  1. 208
  2. 227
  3. 94
  4. 219
  5. 77
  6. 165
  7. 132
  8. 171
  9. 216
  10. 263
  11. 181
  12. 207
  13. 216
  14. 186
  15. 221
  16. 146
  17. 211
  18. 205
  19. 215
  20. 182
  21. 192
  22. 230
  23. 144
  24. 219
  25. 174
  26. 114
  27. 161
  28. 73
  29. 240
  30. 141
  31. 193
  32. 224
  33. 207
  34. 256
  35. 300
  36. 209
  37. 203
  38. 270
  39. 136
  40. 244

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