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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 568 · 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. 1.51 + 45 + 80 + 14 =
  2. 2.15 + 11 + 70 + 13 =
  3. 3.40 + 35 + 74 + 21 =
  4. 4.21 + 77 + 50 + 41 =
  5. 5.57 + 16 + 65 + 70 =
  6. 6.74 + 39 + 70 + 49 =
  7. 7.62 + 86 + 51 + 29 =
  8. 8.58 + 32 + 47 + 60 =
  9. 9.24 + 39 + 74 + 30 =
  10. 10.13 + 87 + 59 + 72 =
  11. 11.54 + 82 + 24 + 37 =
  12. 12.64 + 39 + 50 + 40 =
  13. 13.66 + 53 + 50 + 32 =
  14. 14.30 + 33 + 72 + 43 =
  15. 15.40 + 61 + 38 + 12 =
  16. 16.12 + 83 + 40 + 31 =
  17. 17.70 + 22 + 44 + 29 =
  18. 18.78 + 30 + 16 + 79 =
  19. 19.33 + 89 + 48 + 74 =
  20. 20.63 + 78 + 29 + 20 =
  21. 21.24 + 59 + 17 + 79 =
  22. 22.67 + 87 + 86 + 77 =
  23. 23.89 + 11 + 29 + 55 =
  24. 24.20 + 50 + 27 + 17 =
  25. 25.41 + 89 + 79 + 24 =
  26. 26.29 + 78 + 23 + 29 =
  27. 27.46 + 31 + 66 + 41 =
  28. 28.42 + 44 + 83 + 27 =
  29. 29.64 + 37 + 55 + 14 =
  30. 30.31 + 77 + 53 + 25 =
  31. 31.39 + 71 + 19 + 81 =
  32. 32.48 + 59 + 34 + 65 =
  33. 33.58 + 68 + 57 + 73 =
  34. 34.63 + 24 + 20 + 36 =
  35. 35.32 + 11 + 75 + 85 =
  36. 36.66 + 80 + 31 + 12 =
  37. 37.77 + 72 + 69 + 22 =
  38. 38.35 + 73 + 59 + 54 =
  39. 39.70 + 25 + 40 + 13 =
  40. 40.20 + 14 + 88 + 30 =

Answer key

  1. 190
  2. 109
  3. 170
  4. 189
  5. 208
  6. 232
  7. 228
  8. 197
  9. 167
  10. 231
  11. 197
  12. 193
  13. 201
  14. 178
  15. 151
  16. 166
  17. 165
  18. 203
  19. 244
  20. 190
  21. 179
  22. 317
  23. 184
  24. 114
  25. 233
  26. 159
  27. 184
  28. 196
  29. 170
  30. 186
  31. 210
  32. 206
  33. 256
  34. 143
  35. 203
  36. 189
  37. 240
  38. 221
  39. 148
  40. 152

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