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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 246 · 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. 1.89 + 43 + 77 + 56 =
  2. 2.17 + 19 + 76 + 41 =
  3. 3.59 + 35 + 74 + 24 =
  4. 4.83 + 72 + 79 + 80 =
  5. 5.36 + 21 + 17 + 15 =
  6. 6.60 + 32 + 81 + 43 =
  7. 7.79 + 63 + 32 + 18 =
  8. 8.74 + 38 + 81 + 28 =
  9. 9.19 + 28 + 39 + 19 =
  10. 10.73 + 59 + 27 + 30 =
  11. 11.71 + 86 + 47 + 85 =
  12. 12.46 + 59 + 33 + 55 =
  13. 13.38 + 19 + 13 + 18 =
  14. 14.75 + 82 + 62 + 36 =
  15. 15.85 + 83 + 55 + 80 =
  16. 16.59 + 23 + 55 + 20 =
  17. 17.20 + 23 + 22 + 72 =
  18. 18.70 + 16 + 14 + 69 =
  19. 19.62 + 54 + 39 + 22 =
  20. 20.43 + 38 + 14 + 68 =
  21. 21.45 + 19 + 65 + 62 =
  22. 22.83 + 57 + 34 + 50 =
  23. 23.38 + 41 + 23 + 21 =
  24. 24.31 + 43 + 40 + 34 =
  25. 25.38 + 19 + 39 + 86 =
  26. 26.51 + 76 + 37 + 57 =
  27. 27.19 + 60 + 49 + 89 =
  28. 28.21 + 67 + 88 + 40 =
  29. 29.49 + 20 + 15 + 64 =
  30. 30.21 + 18 + 68 + 34 =
  31. 31.32 + 24 + 66 + 17 =
  32. 32.35 + 73 + 86 + 55 =
  33. 33.32 + 37 + 32 + 16 =
  34. 34.30 + 34 + 60 + 48 =
  35. 35.51 + 32 + 78 + 58 =
  36. 36.69 + 89 + 86 + 65 =
  37. 37.16 + 29 + 88 + 31 =
  38. 38.53 + 32 + 17 + 59 =
  39. 39.25 + 81 + 65 + 16 =
  40. 40.28 + 61 + 44 + 58 =

Answer key

  1. 265
  2. 153
  3. 192
  4. 314
  5. 89
  6. 216
  7. 192
  8. 221
  9. 105
  10. 189
  11. 289
  12. 193
  13. 88
  14. 255
  15. 303
  16. 157
  17. 137
  18. 169
  19. 177
  20. 163
  21. 191
  22. 224
  23. 123
  24. 148
  25. 182
  26. 221
  27. 217
  28. 216
  29. 148
  30. 141
  31. 139
  32. 249
  33. 117
  34. 172
  35. 219
  36. 309
  37. 164
  38. 161
  39. 187
  40. 191

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