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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 437 · 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. 1.64 + 24 + 38 + 17 =
  2. 2.16 + 21 + 16 + 66 =
  3. 3.27 + 77 + 21 + 12 =
  4. 4.45 + 13 + 26 + 43 =
  5. 5.62 + 15 + 79 + 83 =
  6. 6.21 + 49 + 62 + 68 =
  7. 7.68 + 35 + 86 + 76 =
  8. 8.89 + 40 + 49 + 56 =
  9. 9.19 + 88 + 28 + 70 =
  10. 10.25 + 83 + 40 + 63 =
  11. 11.12 + 39 + 35 + 49 =
  12. 12.52 + 67 + 68 + 14 =
  13. 13.20 + 62 + 27 + 31 =
  14. 14.46 + 13 + 82 + 32 =
  15. 15.28 + 52 + 67 + 28 =
  16. 16.87 + 68 + 45 + 34 =
  17. 17.27 + 66 + 16 + 55 =
  18. 18.69 + 45 + 46 + 17 =
  19. 19.40 + 64 + 17 + 25 =
  20. 20.57 + 83 + 37 + 80 =
  21. 21.45 + 63 + 22 + 68 =
  22. 22.27 + 21 + 47 + 75 =
  23. 23.23 + 13 + 80 + 13 =
  24. 24.32 + 49 + 37 + 65 =
  25. 25.59 + 58 + 21 + 28 =
  26. 26.59 + 18 + 22 + 67 =
  27. 27.58 + 37 + 41 + 58 =
  28. 28.71 + 37 + 42 + 74 =
  29. 29.63 + 13 + 80 + 58 =
  30. 30.11 + 40 + 58 + 49 =
  31. 31.28 + 23 + 18 + 63 =
  32. 32.20 + 51 + 44 + 73 =
  33. 33.13 + 73 + 40 + 60 =
  34. 34.24 + 11 + 51 + 83 =
  35. 35.30 + 35 + 27 + 51 =
  36. 36.65 + 56 + 51 + 41 =
  37. 37.82 + 27 + 38 + 65 =
  38. 38.12 + 78 + 44 + 71 =
  39. 39.19 + 86 + 39 + 71 =
  40. 40.30 + 67 + 19 + 25 =

Answer key

  1. 143
  2. 119
  3. 137
  4. 127
  5. 239
  6. 200
  7. 265
  8. 234
  9. 205
  10. 211
  11. 135
  12. 201
  13. 140
  14. 173
  15. 175
  16. 234
  17. 164
  18. 177
  19. 146
  20. 257
  21. 198
  22. 170
  23. 129
  24. 183
  25. 166
  26. 166
  27. 194
  28. 224
  29. 214
  30. 158
  31. 132
  32. 188
  33. 186
  34. 169
  35. 143
  36. 213
  37. 212
  38. 205
  39. 215
  40. 141

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