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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 541 · 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. 1.30 + 38 + 69 + 16 =
  2. 2.47 + 34 + 32 + 30 =
  3. 3.11 + 32 + 21 + 29 =
  4. 4.86 + 87 + 14 + 75 =
  5. 5.39 + 22 + 23 + 59 =
  6. 6.72 + 63 + 50 + 72 =
  7. 7.14 + 35 + 73 + 69 =
  8. 8.84 + 26 + 88 + 75 =
  9. 9.26 + 12 + 39 + 89 =
  10. 10.72 + 70 + 21 + 56 =
  11. 11.12 + 32 + 85 + 48 =
  12. 12.38 + 84 + 64 + 45 =
  13. 13.56 + 21 + 32 + 20 =
  14. 14.81 + 23 + 17 + 28 =
  15. 15.17 + 86 + 73 + 70 =
  16. 16.41 + 42 + 24 + 88 =
  17. 17.85 + 26 + 11 + 33 =
  18. 18.16 + 53 + 62 + 38 =
  19. 19.49 + 48 + 87 + 72 =
  20. 20.85 + 41 + 60 + 17 =
  21. 21.62 + 31 + 54 + 50 =
  22. 22.17 + 18 + 76 + 86 =
  23. 23.66 + 36 + 42 + 27 =
  24. 24.75 + 27 + 34 + 35 =
  25. 25.11 + 86 + 67 + 27 =
  26. 26.72 + 83 + 21 + 84 =
  27. 27.22 + 68 + 53 + 67 =
  28. 28.43 + 29 + 40 + 61 =
  29. 29.42 + 79 + 21 + 59 =
  30. 30.86 + 17 + 25 + 51 =
  31. 31.55 + 61 + 79 + 41 =
  32. 32.66 + 29 + 88 + 87 =
  33. 33.11 + 28 + 83 + 70 =
  34. 34.24 + 77 + 75 + 87 =
  35. 35.14 + 33 + 27 + 29 =
  36. 36.16 + 86 + 58 + 34 =
  37. 37.31 + 42 + 40 + 77 =
  38. 38.15 + 60 + 44 + 63 =
  39. 39.25 + 62 + 29 + 16 =
  40. 40.88 + 18 + 67 + 31 =

Answer key

  1. 153
  2. 143
  3. 93
  4. 262
  5. 143
  6. 257
  7. 191
  8. 273
  9. 166
  10. 219
  11. 177
  12. 231
  13. 129
  14. 149
  15. 246
  16. 195
  17. 155
  18. 169
  19. 256
  20. 203
  21. 197
  22. 197
  23. 171
  24. 171
  25. 191
  26. 260
  27. 210
  28. 173
  29. 201
  30. 179
  31. 236
  32. 270
  33. 192
  34. 263
  35. 103
  36. 194
  37. 190
  38. 182
  39. 132
  40. 204

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