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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 938 · 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. 1.63 + 27 + 69 + 14 =
  2. 2.14 + 88 + 20 + 70 =
  3. 3.37 + 73 + 21 + 75 =
  4. 4.62 + 70 + 89 + 70 =
  5. 5.24 + 11 + 61 + 53 =
  6. 6.13 + 51 + 35 + 79 =
  7. 7.69 + 55 + 32 + 78 =
  8. 8.18 + 31 + 35 + 56 =
  9. 9.54 + 62 + 70 + 12 =
  10. 10.74 + 32 + 75 + 24 =
  11. 11.53 + 26 + 32 + 48 =
  12. 12.56 + 49 + 21 + 34 =
  13. 13.72 + 80 + 70 + 19 =
  14. 14.59 + 72 + 22 + 11 =
  15. 15.62 + 30 + 37 + 73 =
  16. 16.59 + 52 + 88 + 34 =
  17. 17.37 + 21 + 51 + 38 =
  18. 18.18 + 11 + 33 + 31 =
  19. 19.70 + 51 + 30 + 81 =
  20. 20.74 + 39 + 68 + 73 =
  21. 21.44 + 60 + 15 + 61 =
  22. 22.14 + 76 + 42 + 69 =
  23. 23.33 + 61 + 56 + 86 =
  24. 24.48 + 12 + 51 + 57 =
  25. 25.14 + 27 + 30 + 74 =
  26. 26.21 + 24 + 23 + 73 =
  27. 27.73 + 33 + 33 + 66 =
  28. 28.78 + 22 + 36 + 60 =
  29. 29.21 + 23 + 70 + 50 =
  30. 30.82 + 12 + 52 + 36 =
  31. 31.47 + 41 + 73 + 40 =
  32. 32.46 + 82 + 37 + 42 =
  33. 33.23 + 16 + 53 + 80 =
  34. 34.52 + 80 + 27 + 28 =
  35. 35.37 + 29 + 74 + 77 =
  36. 36.21 + 81 + 46 + 54 =
  37. 37.66 + 35 + 58 + 57 =
  38. 38.13 + 14 + 66 + 78 =
  39. 39.69 + 86 + 14 + 47 =
  40. 40.41 + 68 + 70 + 59 =

Answer key

  1. 173
  2. 192
  3. 206
  4. 291
  5. 149
  6. 178
  7. 234
  8. 140
  9. 198
  10. 205
  11. 159
  12. 160
  13. 241
  14. 164
  15. 202
  16. 233
  17. 147
  18. 93
  19. 232
  20. 254
  21. 180
  22. 201
  23. 236
  24. 168
  25. 145
  26. 141
  27. 205
  28. 196
  29. 164
  30. 182
  31. 201
  32. 207
  33. 172
  34. 187
  35. 217
  36. 202
  37. 216
  38. 171
  39. 216
  40. 238

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