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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 81 · 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. 1.72 + 21 + 57 + 52 =
  2. 2.74 + 27 + 69 + 22 =
  3. 3.32 + 29 + 71 + 13 =
  4. 4.21 + 77 + 33 + 68 =
  5. 5.11 + 70 + 15 + 89 =
  6. 6.67 + 14 + 60 + 22 =
  7. 7.79 + 83 + 32 + 75 =
  8. 8.22 + 44 + 24 + 72 =
  9. 9.28 + 43 + 18 + 27 =
  10. 10.80 + 23 + 72 + 77 =
  11. 11.71 + 54 + 63 + 13 =
  12. 12.82 + 72 + 76 + 14 =
  13. 13.76 + 44 + 33 + 18 =
  14. 14.20 + 70 + 69 + 57 =
  15. 15.31 + 64 + 24 + 84 =
  16. 16.58 + 45 + 42 + 19 =
  17. 17.62 + 51 + 81 + 17 =
  18. 18.60 + 17 + 48 + 47 =
  19. 19.12 + 20 + 53 + 58 =
  20. 20.77 + 51 + 38 + 58 =
  21. 21.64 + 73 + 64 + 40 =
  22. 22.51 + 66 + 80 + 80 =
  23. 23.50 + 49 + 85 + 50 =
  24. 24.64 + 81 + 32 + 70 =
  25. 25.51 + 25 + 21 + 55 =
  26. 26.61 + 49 + 65 + 43 =
  27. 27.72 + 64 + 28 + 73 =
  28. 28.53 + 75 + 13 + 13 =
  29. 29.36 + 79 + 30 + 53 =
  30. 30.12 + 57 + 44 + 31 =
  31. 31.22 + 75 + 29 + 22 =
  32. 32.81 + 43 + 24 + 84 =
  33. 33.80 + 76 + 40 + 51 =
  34. 34.39 + 15 + 73 + 75 =
  35. 35.18 + 64 + 85 + 67 =
  36. 36.45 + 77 + 40 + 27 =
  37. 37.65 + 16 + 78 + 55 =
  38. 38.67 + 16 + 52 + 52 =
  39. 39.50 + 54 + 81 + 47 =
  40. 40.20 + 62 + 89 + 65 =

Answer key

  1. 202
  2. 192
  3. 145
  4. 199
  5. 185
  6. 163
  7. 269
  8. 162
  9. 116
  10. 252
  11. 201
  12. 244
  13. 171
  14. 216
  15. 203
  16. 164
  17. 211
  18. 172
  19. 143
  20. 224
  21. 241
  22. 277
  23. 234
  24. 247
  25. 152
  26. 218
  27. 237
  28. 154
  29. 198
  30. 144
  31. 148
  32. 232
  33. 247
  34. 202
  35. 234
  36. 189
  37. 214
  38. 187
  39. 232
  40. 236

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