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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 524 · 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. 1.12 + 72 + 83 + 70 =
  2. 2.16 + 73 + 84 + 86 =
  3. 3.11 + 82 + 69 + 39 =
  4. 4.20 + 27 + 69 + 42 =
  5. 5.20 + 46 + 60 + 71 =
  6. 6.58 + 21 + 16 + 65 =
  7. 7.76 + 32 + 49 + 28 =
  8. 8.71 + 41 + 28 + 66 =
  9. 9.25 + 11 + 81 + 37 =
  10. 10.11 + 61 + 49 + 12 =
  11. 11.85 + 43 + 59 + 70 =
  12. 12.35 + 69 + 23 + 17 =
  13. 13.17 + 85 + 69 + 78 =
  14. 14.82 + 36 + 64 + 82 =
  15. 15.72 + 63 + 64 + 32 =
  16. 16.36 + 26 + 68 + 48 =
  17. 17.65 + 53 + 60 + 62 =
  18. 18.71 + 22 + 26 + 78 =
  19. 19.34 + 62 + 35 + 85 =
  20. 20.58 + 22 + 61 + 54 =
  21. 21.16 + 37 + 13 + 58 =
  22. 22.38 + 28 + 16 + 61 =
  23. 23.86 + 27 + 69 + 52 =
  24. 24.26 + 22 + 19 + 70 =
  25. 25.49 + 31 + 59 + 29 =
  26. 26.60 + 30 + 68 + 39 =
  27. 27.30 + 81 + 69 + 45 =
  28. 28.67 + 11 + 64 + 19 =
  29. 29.39 + 77 + 11 + 83 =
  30. 30.61 + 17 + 32 + 71 =
  31. 31.58 + 15 + 41 + 39 =
  32. 32.61 + 72 + 11 + 84 =
  33. 33.26 + 31 + 85 + 87 =
  34. 34.34 + 64 + 22 + 16 =
  35. 35.43 + 56 + 21 + 32 =
  36. 36.27 + 35 + 50 + 48 =
  37. 37.63 + 68 + 74 + 54 =
  38. 38.62 + 79 + 14 + 16 =
  39. 39.23 + 42 + 60 + 56 =
  40. 40.69 + 67 + 29 + 63 =

Answer key

  1. 237
  2. 259
  3. 201
  4. 158
  5. 197
  6. 160
  7. 185
  8. 206
  9. 154
  10. 133
  11. 257
  12. 144
  13. 249
  14. 264
  15. 231
  16. 178
  17. 240
  18. 197
  19. 216
  20. 195
  21. 124
  22. 143
  23. 234
  24. 137
  25. 168
  26. 197
  27. 225
  28. 161
  29. 210
  30. 181
  31. 153
  32. 228
  33. 229
  34. 136
  35. 152
  36. 160
  37. 259
  38. 171
  39. 181
  40. 228

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