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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 402 · 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. 1.35 + 55 + 62 + 64 =
  2. 2.42 + 42 + 77 + 30 =
  3. 3.74 + 79 + 21 + 18 =
  4. 4.46 + 13 + 80 + 71 =
  5. 5.79 + 42 + 25 + 63 =
  6. 6.88 + 49 + 26 + 18 =
  7. 7.39 + 22 + 70 + 64 =
  8. 8.60 + 23 + 12 + 69 =
  9. 9.60 + 52 + 28 + 85 =
  10. 10.38 + 32 + 27 + 60 =
  11. 11.28 + 28 + 19 + 67 =
  12. 12.29 + 52 + 18 + 83 =
  13. 13.29 + 66 + 24 + 85 =
  14. 14.31 + 17 + 66 + 82 =
  15. 15.32 + 20 + 36 + 72 =
  16. 16.80 + 43 + 43 + 46 =
  17. 17.56 + 13 + 51 + 63 =
  18. 18.18 + 75 + 35 + 80 =
  19. 19.53 + 11 + 63 + 24 =
  20. 20.16 + 83 + 31 + 37 =
  21. 21.33 + 52 + 57 + 27 =
  22. 22.56 + 33 + 65 + 47 =
  23. 23.12 + 87 + 14 + 63 =
  24. 24.76 + 52 + 75 + 69 =
  25. 25.19 + 43 + 30 + 19 =
  26. 26.12 + 25 + 67 + 85 =
  27. 27.26 + 78 + 73 + 76 =
  28. 28.16 + 34 + 64 + 29 =
  29. 29.69 + 56 + 44 + 50 =
  30. 30.85 + 85 + 36 + 83 =
  31. 31.16 + 21 + 84 + 56 =
  32. 32.61 + 60 + 28 + 83 =
  33. 33.19 + 64 + 23 + 47 =
  34. 34.34 + 16 + 87 + 31 =
  35. 35.18 + 17 + 15 + 40 =
  36. 36.78 + 31 + 67 + 62 =
  37. 37.58 + 43 + 48 + 21 =
  38. 38.78 + 47 + 32 + 17 =
  39. 39.14 + 49 + 75 + 30 =
  40. 40.64 + 72 + 36 + 71 =

Answer key

  1. 216
  2. 191
  3. 192
  4. 210
  5. 209
  6. 181
  7. 195
  8. 164
  9. 225
  10. 157
  11. 142
  12. 182
  13. 204
  14. 196
  15. 160
  16. 212
  17. 183
  18. 208
  19. 151
  20. 167
  21. 169
  22. 201
  23. 176
  24. 272
  25. 111
  26. 189
  27. 253
  28. 143
  29. 219
  30. 289
  31. 177
  32. 232
  33. 153
  34. 168
  35. 90
  36. 238
  37. 170
  38. 174
  39. 168
  40. 243

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