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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 711 · 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. 1.54 + 36 + 24 + 58 =
  2. 2.42 + 42 + 17 + 33 =
  3. 3.64 + 20 + 56 + 46 =
  4. 4.29 + 35 + 19 + 33 =
  5. 5.84 + 17 + 28 + 65 =
  6. 6.87 + 38 + 20 + 75 =
  7. 7.80 + 42 + 82 + 38 =
  8. 8.58 + 67 + 27 + 73 =
  9. 9.46 + 42 + 78 + 42 =
  10. 10.27 + 41 + 33 + 87 =
  11. 11.69 + 82 + 56 + 60 =
  12. 12.77 + 46 + 24 + 34 =
  13. 13.27 + 31 + 59 + 30 =
  14. 14.11 + 20 + 73 + 55 =
  15. 15.39 + 40 + 57 + 77 =
  16. 16.12 + 32 + 44 + 63 =
  17. 17.46 + 82 + 50 + 50 =
  18. 18.17 + 20 + 52 + 21 =
  19. 19.24 + 39 + 51 + 30 =
  20. 20.79 + 49 + 37 + 57 =
  21. 21.78 + 68 + 63 + 52 =
  22. 22.73 + 30 + 50 + 30 =
  23. 23.30 + 32 + 67 + 82 =
  24. 24.51 + 57 + 23 + 55 =
  25. 25.21 + 48 + 32 + 72 =
  26. 26.22 + 57 + 72 + 72 =
  27. 27.68 + 52 + 24 + 61 =
  28. 28.64 + 54 + 34 + 39 =
  29. 29.69 + 89 + 77 + 25 =
  30. 30.56 + 87 + 85 + 35 =
  31. 31.37 + 68 + 75 + 75 =
  32. 32.65 + 85 + 66 + 71 =
  33. 33.86 + 69 + 61 + 54 =
  34. 34.55 + 55 + 52 + 52 =
  35. 35.23 + 46 + 77 + 28 =
  36. 36.38 + 43 + 18 + 55 =
  37. 37.83 + 11 + 23 + 25 =
  38. 38.14 + 30 + 33 + 12 =
  39. 39.56 + 40 + 28 + 30 =
  40. 40.17 + 81 + 88 + 40 =

Answer key

  1. 172
  2. 134
  3. 186
  4. 116
  5. 194
  6. 220
  7. 242
  8. 225
  9. 208
  10. 188
  11. 267
  12. 181
  13. 147
  14. 159
  15. 213
  16. 151
  17. 228
  18. 110
  19. 144
  20. 222
  21. 261
  22. 183
  23. 211
  24. 186
  25. 173
  26. 223
  27. 205
  28. 191
  29. 260
  30. 263
  31. 255
  32. 287
  33. 270
  34. 214
  35. 174
  36. 154
  37. 142
  38. 89
  39. 154
  40. 226

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