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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 774 · 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. 1.50 + 26 + 46 + 21 =
  2. 2.77 + 73 + 44 + 29 =
  3. 3.76 + 49 + 24 + 13 =
  4. 4.50 + 11 + 74 + 17 =
  5. 5.46 + 43 + 20 + 28 =
  6. 6.84 + 83 + 56 + 43 =
  7. 7.44 + 72 + 22 + 46 =
  8. 8.73 + 30 + 69 + 14 =
  9. 9.41 + 28 + 75 + 45 =
  10. 10.73 + 23 + 61 + 88 =
  11. 11.79 + 61 + 60 + 26 =
  12. 12.84 + 23 + 30 + 19 =
  13. 13.54 + 51 + 83 + 84 =
  14. 14.64 + 89 + 31 + 28 =
  15. 15.53 + 30 + 57 + 26 =
  16. 16.27 + 46 + 11 + 27 =
  17. 17.73 + 64 + 20 + 34 =
  18. 18.24 + 87 + 54 + 28 =
  19. 19.70 + 56 + 22 + 26 =
  20. 20.34 + 17 + 35 + 58 =
  21. 21.59 + 38 + 22 + 28 =
  22. 22.14 + 41 + 32 + 84 =
  23. 23.79 + 48 + 59 + 20 =
  24. 24.86 + 14 + 50 + 13 =
  25. 25.82 + 61 + 83 + 55 =
  26. 26.58 + 29 + 40 + 80 =
  27. 27.38 + 40 + 41 + 80 =
  28. 28.79 + 87 + 80 + 43 =
  29. 29.48 + 44 + 17 + 26 =
  30. 30.53 + 47 + 34 + 72 =
  31. 31.18 + 68 + 23 + 19 =
  32. 32.15 + 16 + 60 + 27 =
  33. 33.32 + 74 + 49 + 44 =
  34. 34.43 + 23 + 14 + 29 =
  35. 35.43 + 56 + 66 + 63 =
  36. 36.22 + 22 + 28 + 17 =
  37. 37.26 + 89 + 88 + 47 =
  38. 38.21 + 48 + 34 + 50 =
  39. 39.53 + 85 + 49 + 84 =
  40. 40.34 + 12 + 69 + 18 =

Answer key

  1. 143
  2. 223
  3. 162
  4. 152
  5. 137
  6. 266
  7. 184
  8. 186
  9. 189
  10. 245
  11. 226
  12. 156
  13. 272
  14. 212
  15. 166
  16. 111
  17. 191
  18. 193
  19. 174
  20. 144
  21. 147
  22. 171
  23. 206
  24. 163
  25. 281
  26. 207
  27. 199
  28. 289
  29. 135
  30. 206
  31. 128
  32. 118
  33. 199
  34. 109
  35. 228
  36. 89
  37. 250
  38. 153
  39. 271
  40. 133

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