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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 788 · 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. 1.68 + 37 + 88 + 48 =
  2. 2.87 + 63 + 83 + 31 =
  3. 3.27 + 70 + 28 + 19 =
  4. 4.36 + 63 + 29 + 68 =
  5. 5.12 + 46 + 53 + 22 =
  6. 6.78 + 35 + 13 + 63 =
  7. 7.71 + 77 + 11 + 50 =
  8. 8.44 + 22 + 38 + 21 =
  9. 9.52 + 58 + 13 + 70 =
  10. 10.37 + 24 + 79 + 41 =
  11. 11.72 + 74 + 88 + 33 =
  12. 12.69 + 49 + 48 + 78 =
  13. 13.78 + 41 + 86 + 57 =
  14. 14.40 + 89 + 41 + 26 =
  15. 15.87 + 62 + 51 + 76 =
  16. 16.71 + 51 + 16 + 64 =
  17. 17.89 + 68 + 79 + 26 =
  18. 18.33 + 73 + 49 + 68 =
  19. 19.64 + 31 + 58 + 71 =
  20. 20.19 + 44 + 76 + 35 =
  21. 21.27 + 37 + 19 + 12 =
  22. 22.62 + 44 + 45 + 82 =
  23. 23.17 + 73 + 54 + 69 =
  24. 24.45 + 62 + 31 + 23 =
  25. 25.76 + 16 + 13 + 54 =
  26. 26.32 + 88 + 48 + 24 =
  27. 27.79 + 49 + 28 + 81 =
  28. 28.35 + 14 + 83 + 24 =
  29. 29.39 + 78 + 87 + 25 =
  30. 30.84 + 16 + 12 + 75 =
  31. 31.19 + 74 + 28 + 57 =
  32. 32.89 + 81 + 25 + 83 =
  33. 33.27 + 52 + 78 + 32 =
  34. 34.17 + 26 + 31 + 57 =
  35. 35.68 + 11 + 46 + 57 =
  36. 36.63 + 80 + 35 + 83 =
  37. 37.20 + 76 + 45 + 67 =
  38. 38.28 + 65 + 58 + 65 =
  39. 39.40 + 54 + 63 + 69 =
  40. 40.52 + 28 + 66 + 78 =

Answer key

  1. 241
  2. 264
  3. 144
  4. 196
  5. 133
  6. 189
  7. 209
  8. 125
  9. 193
  10. 181
  11. 267
  12. 244
  13. 262
  14. 196
  15. 276
  16. 202
  17. 262
  18. 223
  19. 224
  20. 174
  21. 95
  22. 233
  23. 213
  24. 161
  25. 159
  26. 192
  27. 237
  28. 156
  29. 229
  30. 187
  31. 178
  32. 278
  33. 189
  34. 131
  35. 182
  36. 261
  37. 208
  38. 216
  39. 226
  40. 224

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