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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 336 · 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. 1.13 + 24 + 75 + 42 =
  2. 2.47 + 15 + 45 + 86 =
  3. 3.24 + 54 + 33 + 84 =
  4. 4.61 + 44 + 37 + 22 =
  5. 5.49 + 64 + 61 + 50 =
  6. 6.74 + 69 + 22 + 29 =
  7. 7.65 + 19 + 88 + 31 =
  8. 8.41 + 81 + 26 + 88 =
  9. 9.69 + 21 + 46 + 29 =
  10. 10.85 + 20 + 69 + 86 =
  11. 11.65 + 57 + 72 + 37 =
  12. 12.35 + 84 + 73 + 87 =
  13. 13.54 + 65 + 74 + 12 =
  14. 14.29 + 26 + 75 + 40 =
  15. 15.24 + 81 + 14 + 52 =
  16. 16.79 + 43 + 36 + 81 =
  17. 17.89 + 11 + 26 + 28 =
  18. 18.36 + 73 + 13 + 57 =
  19. 19.14 + 34 + 66 + 45 =
  20. 20.19 + 31 + 33 + 81 =
  21. 21.37 + 70 + 16 + 68 =
  22. 22.60 + 86 + 16 + 62 =
  23. 23.54 + 45 + 36 + 19 =
  24. 24.60 + 66 + 52 + 63 =
  25. 25.69 + 69 + 70 + 52 =
  26. 26.88 + 52 + 15 + 44 =
  27. 27.51 + 21 + 79 + 81 =
  28. 28.86 + 37 + 61 + 61 =
  29. 29.26 + 39 + 42 + 60 =
  30. 30.25 + 67 + 83 + 50 =
  31. 31.83 + 39 + 67 + 64 =
  32. 32.74 + 32 + 36 + 32 =
  33. 33.74 + 88 + 63 + 83 =
  34. 34.41 + 17 + 86 + 78 =
  35. 35.85 + 68 + 12 + 24 =
  36. 36.81 + 28 + 64 + 36 =
  37. 37.26 + 64 + 46 + 60 =
  38. 38.51 + 65 + 79 + 22 =
  39. 39.44 + 29 + 74 + 18 =
  40. 40.59 + 59 + 49 + 89 =

Answer key

  1. 154
  2. 193
  3. 195
  4. 164
  5. 224
  6. 194
  7. 203
  8. 236
  9. 165
  10. 260
  11. 231
  12. 279
  13. 205
  14. 170
  15. 171
  16. 239
  17. 154
  18. 179
  19. 159
  20. 164
  21. 191
  22. 224
  23. 154
  24. 241
  25. 260
  26. 199
  27. 232
  28. 245
  29. 167
  30. 225
  31. 253
  32. 174
  33. 308
  34. 222
  35. 189
  36. 209
  37. 196
  38. 217
  39. 165
  40. 256

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