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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 236 · 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. 1.48 + 53 + 88 + 76 =
  2. 2.25 + 19 + 64 + 86 =
  3. 3.66 + 44 + 18 + 47 =
  4. 4.23 + 82 + 51 + 29 =
  5. 5.82 + 48 + 65 + 62 =
  6. 6.32 + 60 + 80 + 79 =
  7. 7.27 + 26 + 21 + 29 =
  8. 8.20 + 56 + 72 + 30 =
  9. 9.88 + 79 + 40 + 77 =
  10. 10.15 + 78 + 16 + 64 =
  11. 11.53 + 11 + 28 + 59 =
  12. 12.65 + 72 + 55 + 31 =
  13. 13.32 + 64 + 80 + 33 =
  14. 14.29 + 68 + 89 + 51 =
  15. 15.80 + 79 + 13 + 16 =
  16. 16.87 + 64 + 29 + 89 =
  17. 17.89 + 33 + 14 + 27 =
  18. 18.74 + 66 + 33 + 82 =
  19. 19.32 + 46 + 24 + 86 =
  20. 20.14 + 74 + 46 + 64 =
  21. 21.68 + 22 + 53 + 65 =
  22. 22.65 + 68 + 68 + 30 =
  23. 23.12 + 76 + 20 + 30 =
  24. 24.52 + 49 + 19 + 47 =
  25. 25.51 + 74 + 64 + 49 =
  26. 26.43 + 27 + 15 + 28 =
  27. 27.61 + 58 + 76 + 12 =
  28. 28.89 + 89 + 66 + 30 =
  29. 29.23 + 39 + 53 + 72 =
  30. 30.20 + 63 + 42 + 26 =
  31. 31.33 + 34 + 60 + 83 =
  32. 32.88 + 50 + 43 + 33 =
  33. 33.53 + 11 + 33 + 70 =
  34. 34.86 + 12 + 49 + 56 =
  35. 35.34 + 14 + 63 + 35 =
  36. 36.77 + 48 + 81 + 40 =
  37. 37.28 + 66 + 29 + 85 =
  38. 38.43 + 37 + 33 + 33 =
  39. 39.81 + 25 + 60 + 53 =
  40. 40.19 + 38 + 48 + 40 =

Answer key

  1. 265
  2. 194
  3. 175
  4. 185
  5. 257
  6. 251
  7. 103
  8. 178
  9. 284
  10. 173
  11. 151
  12. 223
  13. 209
  14. 237
  15. 188
  16. 269
  17. 163
  18. 255
  19. 188
  20. 198
  21. 208
  22. 231
  23. 138
  24. 167
  25. 238
  26. 113
  27. 207
  28. 274
  29. 187
  30. 151
  31. 210
  32. 214
  33. 167
  34. 203
  35. 146
  36. 246
  37. 208
  38. 146
  39. 219
  40. 145

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