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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 702 · 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. 1.13 + 82 + 14 + 89 =
  2. 2.72 + 71 + 85 + 59 =
  3. 3.41 + 30 + 68 + 32 =
  4. 4.21 + 13 + 36 + 55 =
  5. 5.56 + 13 + 82 + 70 =
  6. 6.48 + 76 + 25 + 88 =
  7. 7.75 + 38 + 34 + 29 =
  8. 8.88 + 89 + 19 + 13 =
  9. 9.44 + 11 + 18 + 20 =
  10. 10.13 + 58 + 40 + 61 =
  11. 11.56 + 20 + 52 + 40 =
  12. 12.52 + 70 + 66 + 73 =
  13. 13.62 + 22 + 88 + 15 =
  14. 14.52 + 83 + 36 + 55 =
  15. 15.85 + 61 + 64 + 85 =
  16. 16.41 + 61 + 53 + 16 =
  17. 17.67 + 27 + 60 + 32 =
  18. 18.58 + 11 + 32 + 24 =
  19. 19.34 + 48 + 52 + 36 =
  20. 20.24 + 34 + 75 + 64 =
  21. 21.78 + 72 + 27 + 57 =
  22. 22.74 + 44 + 65 + 55 =
  23. 23.80 + 55 + 19 + 54 =
  24. 24.58 + 89 + 86 + 14 =
  25. 25.60 + 47 + 84 + 57 =
  26. 26.29 + 33 + 83 + 60 =
  27. 27.25 + 39 + 68 + 66 =
  28. 28.33 + 45 + 80 + 11 =
  29. 29.50 + 66 + 63 + 15 =
  30. 30.41 + 30 + 53 + 53 =
  31. 31.11 + 87 + 32 + 33 =
  32. 32.63 + 18 + 86 + 42 =
  33. 33.31 + 77 + 67 + 71 =
  34. 34.17 + 87 + 85 + 58 =
  35. 35.73 + 89 + 12 + 46 =
  36. 36.37 + 42 + 51 + 13 =
  37. 37.71 + 44 + 26 + 48 =
  38. 38.20 + 26 + 17 + 62 =
  39. 39.84 + 73 + 86 + 33 =
  40. 40.47 + 61 + 57 + 30 =

Answer key

  1. 198
  2. 287
  3. 171
  4. 125
  5. 221
  6. 237
  7. 176
  8. 209
  9. 93
  10. 172
  11. 168
  12. 261
  13. 187
  14. 226
  15. 295
  16. 171
  17. 186
  18. 125
  19. 170
  20. 197
  21. 234
  22. 238
  23. 208
  24. 247
  25. 248
  26. 205
  27. 198
  28. 169
  29. 194
  30. 177
  31. 163
  32. 209
  33. 246
  34. 247
  35. 220
  36. 143
  37. 189
  38. 125
  39. 276
  40. 195

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