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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 633 · 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. 1.78 + 28 + 11 + 76 =
  2. 2.58 + 22 + 40 + 13 =
  3. 3.68 + 60 + 80 + 57 =
  4. 4.76 + 79 + 12 + 28 =
  5. 5.29 + 36 + 42 + 71 =
  6. 6.25 + 11 + 68 + 12 =
  7. 7.60 + 51 + 32 + 51 =
  8. 8.71 + 83 + 49 + 53 =
  9. 9.53 + 86 + 68 + 16 =
  10. 10.65 + 14 + 85 + 26 =
  11. 11.14 + 17 + 80 + 71 =
  12. 12.59 + 72 + 51 + 53 =
  13. 13.61 + 40 + 60 + 25 =
  14. 14.17 + 77 + 16 + 63 =
  15. 15.79 + 88 + 78 + 17 =
  16. 16.79 + 14 + 81 + 40 =
  17. 17.84 + 47 + 28 + 80 =
  18. 18.18 + 69 + 56 + 45 =
  19. 19.43 + 32 + 11 + 55 =
  20. 20.19 + 49 + 21 + 14 =
  21. 21.42 + 43 + 17 + 39 =
  22. 22.76 + 62 + 24 + 16 =
  23. 23.36 + 45 + 50 + 28 =
  24. 24.80 + 26 + 84 + 73 =
  25. 25.38 + 79 + 72 + 66 =
  26. 26.22 + 89 + 73 + 68 =
  27. 27.28 + 85 + 23 + 56 =
  28. 28.58 + 84 + 82 + 33 =
  29. 29.80 + 35 + 64 + 87 =
  30. 30.20 + 51 + 57 + 83 =
  31. 31.30 + 11 + 26 + 64 =
  32. 32.49 + 33 + 42 + 85 =
  33. 33.80 + 66 + 65 + 66 =
  34. 34.80 + 34 + 66 + 25 =
  35. 35.81 + 30 + 27 + 32 =
  36. 36.66 + 51 + 70 + 45 =
  37. 37.50 + 33 + 62 + 40 =
  38. 38.62 + 45 + 75 + 47 =
  39. 39.38 + 52 + 17 + 24 =
  40. 40.88 + 51 + 52 + 66 =

Answer key

  1. 193
  2. 133
  3. 265
  4. 195
  5. 178
  6. 116
  7. 194
  8. 256
  9. 223
  10. 190
  11. 182
  12. 235
  13. 186
  14. 173
  15. 262
  16. 214
  17. 239
  18. 188
  19. 141
  20. 103
  21. 141
  22. 178
  23. 159
  24. 263
  25. 255
  26. 252
  27. 192
  28. 257
  29. 266
  30. 211
  31. 131
  32. 209
  33. 277
  34. 205
  35. 170
  36. 232
  37. 185
  38. 229
  39. 131
  40. 257

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