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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 730 · 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. 1.21 + 50 + 31 + 62 =
  2. 2.43 + 61 + 19 + 84 =
  3. 3.17 + 34 + 25 + 14 =
  4. 4.27 + 67 + 11 + 54 =
  5. 5.37 + 36 + 35 + 36 =
  6. 6.34 + 79 + 44 + 63 =
  7. 7.46 + 47 + 86 + 18 =
  8. 8.85 + 37 + 25 + 68 =
  9. 9.87 + 22 + 54 + 79 =
  10. 10.22 + 62 + 41 + 44 =
  11. 11.21 + 17 + 35 + 88 =
  12. 12.13 + 37 + 88 + 80 =
  13. 13.41 + 18 + 48 + 67 =
  14. 14.13 + 87 + 88 + 50 =
  15. 15.86 + 80 + 34 + 24 =
  16. 16.79 + 74 + 67 + 31 =
  17. 17.19 + 36 + 53 + 54 =
  18. 18.32 + 22 + 59 + 76 =
  19. 19.26 + 43 + 37 + 27 =
  20. 20.11 + 60 + 56 + 71 =
  21. 21.75 + 44 + 39 + 40 =
  22. 22.45 + 33 + 16 + 81 =
  23. 23.34 + 71 + 72 + 11 =
  24. 24.62 + 34 + 49 + 13 =
  25. 25.43 + 36 + 76 + 39 =
  26. 26.28 + 44 + 22 + 28 =
  27. 27.11 + 77 + 74 + 17 =
  28. 28.60 + 65 + 26 + 87 =
  29. 29.46 + 46 + 47 + 40 =
  30. 30.61 + 31 + 26 + 23 =
  31. 31.14 + 58 + 48 + 50 =
  32. 32.16 + 64 + 28 + 84 =
  33. 33.39 + 75 + 76 + 44 =
  34. 34.56 + 16 + 51 + 87 =
  35. 35.36 + 37 + 48 + 80 =
  36. 36.42 + 26 + 31 + 18 =
  37. 37.42 + 51 + 14 + 52 =
  38. 38.46 + 42 + 88 + 63 =
  39. 39.66 + 21 + 79 + 45 =
  40. 40.47 + 30 + 47 + 33 =

Answer key

  1. 164
  2. 207
  3. 90
  4. 159
  5. 144
  6. 220
  7. 197
  8. 215
  9. 242
  10. 169
  11. 161
  12. 218
  13. 174
  14. 238
  15. 224
  16. 251
  17. 162
  18. 189
  19. 133
  20. 198
  21. 198
  22. 175
  23. 188
  24. 158
  25. 194
  26. 122
  27. 179
  28. 238
  29. 179
  30. 141
  31. 170
  32. 192
  33. 234
  34. 210
  35. 201
  36. 117
  37. 159
  38. 239
  39. 211
  40. 157

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