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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 712 · 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. 1.76 + 37 + 19 + 42 =
  2. 2.34 + 69 + 46 + 68 =
  3. 3.22 + 36 + 26 + 13 =
  4. 4.42 + 12 + 79 + 61 =
  5. 5.87 + 47 + 81 + 46 =
  6. 6.79 + 49 + 60 + 88 =
  7. 7.19 + 54 + 78 + 22 =
  8. 8.64 + 65 + 68 + 76 =
  9. 9.33 + 89 + 26 + 68 =
  10. 10.23 + 19 + 31 + 79 =
  11. 11.50 + 47 + 18 + 45 =
  12. 12.47 + 57 + 76 + 35 =
  13. 13.55 + 34 + 65 + 35 =
  14. 14.32 + 66 + 35 + 59 =
  15. 15.74 + 38 + 36 + 84 =
  16. 16.68 + 52 + 76 + 52 =
  17. 17.45 + 12 + 13 + 33 =
  18. 18.42 + 48 + 44 + 48 =
  19. 19.21 + 72 + 57 + 27 =
  20. 20.78 + 21 + 71 + 79 =
  21. 21.35 + 67 + 47 + 42 =
  22. 22.40 + 16 + 53 + 20 =
  23. 23.74 + 34 + 58 + 81 =
  24. 24.59 + 85 + 81 + 34 =
  25. 25.14 + 64 + 60 + 17 =
  26. 26.79 + 65 + 49 + 25 =
  27. 27.12 + 46 + 74 + 70 =
  28. 28.67 + 83 + 71 + 35 =
  29. 29.12 + 35 + 24 + 19 =
  30. 30.21 + 13 + 67 + 82 =
  31. 31.24 + 59 + 68 + 73 =
  32. 32.33 + 18 + 74 + 40 =
  33. 33.87 + 72 + 64 + 73 =
  34. 34.23 + 89 + 65 + 89 =
  35. 35.49 + 11 + 79 + 67 =
  36. 36.75 + 81 + 66 + 62 =
  37. 37.42 + 53 + 48 + 68 =
  38. 38.38 + 62 + 78 + 29 =
  39. 39.32 + 70 + 68 + 23 =
  40. 40.76 + 48 + 66 + 13 =

Answer key

  1. 174
  2. 217
  3. 97
  4. 194
  5. 261
  6. 276
  7. 173
  8. 273
  9. 216
  10. 152
  11. 160
  12. 215
  13. 189
  14. 192
  15. 232
  16. 248
  17. 103
  18. 182
  19. 177
  20. 249
  21. 191
  22. 129
  23. 247
  24. 259
  25. 155
  26. 218
  27. 202
  28. 256
  29. 90
  30. 183
  31. 224
  32. 165
  33. 296
  34. 266
  35. 206
  36. 284
  37. 211
  38. 207
  39. 193
  40. 203

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