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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 760 · 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. 1.36 + 29 + 69 + 36 =
  2. 2.47 + 57 + 38 + 27 =
  3. 3.12 + 73 + 50 + 52 =
  4. 4.51 + 14 + 50 + 87 =
  5. 5.69 + 66 + 87 + 69 =
  6. 6.44 + 58 + 33 + 14 =
  7. 7.32 + 40 + 55 + 80 =
  8. 8.59 + 65 + 23 + 88 =
  9. 9.78 + 20 + 58 + 56 =
  10. 10.53 + 83 + 43 + 15 =
  11. 11.66 + 37 + 64 + 63 =
  12. 12.57 + 41 + 22 + 27 =
  13. 13.25 + 50 + 54 + 25 =
  14. 14.19 + 68 + 32 + 84 =
  15. 15.41 + 20 + 49 + 20 =
  16. 16.86 + 57 + 87 + 36 =
  17. 17.15 + 51 + 47 + 83 =
  18. 18.59 + 22 + 44 + 14 =
  19. 19.67 + 84 + 19 + 24 =
  20. 20.23 + 42 + 68 + 27 =
  21. 21.14 + 72 + 35 + 19 =
  22. 22.31 + 33 + 11 + 25 =
  23. 23.84 + 34 + 41 + 28 =
  24. 24.59 + 11 + 46 + 36 =
  25. 25.44 + 62 + 31 + 24 =
  26. 26.22 + 59 + 87 + 31 =
  27. 27.61 + 60 + 36 + 80 =
  28. 28.62 + 66 + 83 + 28 =
  29. 29.46 + 12 + 87 + 84 =
  30. 30.21 + 33 + 39 + 59 =
  31. 31.80 + 48 + 37 + 22 =
  32. 32.11 + 13 + 38 + 39 =
  33. 33.22 + 74 + 31 + 40 =
  34. 34.65 + 54 + 38 + 74 =
  35. 35.41 + 73 + 76 + 89 =
  36. 36.68 + 12 + 35 + 50 =
  37. 37.23 + 46 + 13 + 60 =
  38. 38.20 + 59 + 24 + 85 =
  39. 39.34 + 30 + 23 + 47 =
  40. 40.51 + 84 + 19 + 38 =

Answer key

  1. 170
  2. 169
  3. 187
  4. 202
  5. 291
  6. 149
  7. 207
  8. 235
  9. 212
  10. 194
  11. 230
  12. 147
  13. 154
  14. 203
  15. 130
  16. 266
  17. 196
  18. 139
  19. 194
  20. 160
  21. 140
  22. 100
  23. 187
  24. 152
  25. 161
  26. 199
  27. 237
  28. 239
  29. 229
  30. 152
  31. 187
  32. 101
  33. 167
  34. 231
  35. 279
  36. 165
  37. 142
  38. 188
  39. 134
  40. 192

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