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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 374 · 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. 1.27 + 20 + 14 + 87 =
  2. 2.49 + 87 + 58 + 31 =
  3. 3.16 + 72 + 61 + 27 =
  4. 4.28 + 58 + 36 + 19 =
  5. 5.24 + 46 + 33 + 19 =
  6. 6.51 + 34 + 34 + 57 =
  7. 7.74 + 80 + 33 + 60 =
  8. 8.19 + 71 + 39 + 11 =
  9. 9.54 + 58 + 22 + 30 =
  10. 10.65 + 33 + 21 + 76 =
  11. 11.14 + 42 + 62 + 26 =
  12. 12.37 + 33 + 35 + 52 =
  13. 13.35 + 32 + 76 + 19 =
  14. 14.47 + 31 + 84 + 45 =
  15. 15.73 + 63 + 35 + 33 =
  16. 16.17 + 34 + 42 + 45 =
  17. 17.64 + 67 + 41 + 58 =
  18. 18.43 + 49 + 80 + 63 =
  19. 19.85 + 49 + 29 + 59 =
  20. 20.57 + 16 + 81 + 14 =
  21. 21.50 + 26 + 35 + 30 =
  22. 22.29 + 68 + 59 + 57 =
  23. 23.63 + 69 + 11 + 33 =
  24. 24.32 + 18 + 74 + 61 =
  25. 25.60 + 80 + 86 + 61 =
  26. 26.88 + 18 + 42 + 20 =
  27. 27.55 + 24 + 70 + 62 =
  28. 28.82 + 29 + 81 + 30 =
  29. 29.68 + 38 + 38 + 23 =
  30. 30.77 + 71 + 18 + 22 =
  31. 31.62 + 80 + 40 + 75 =
  32. 32.72 + 11 + 48 + 17 =
  33. 33.27 + 26 + 51 + 22 =
  34. 34.58 + 24 + 19 + 22 =
  35. 35.20 + 41 + 55 + 82 =
  36. 36.12 + 16 + 60 + 64 =
  37. 37.65 + 25 + 80 + 37 =
  38. 38.14 + 46 + 25 + 73 =
  39. 39.60 + 23 + 14 + 48 =
  40. 40.61 + 28 + 25 + 70 =

Answer key

  1. 148
  2. 225
  3. 176
  4. 141
  5. 122
  6. 176
  7. 247
  8. 140
  9. 164
  10. 195
  11. 144
  12. 157
  13. 162
  14. 207
  15. 204
  16. 138
  17. 230
  18. 235
  19. 222
  20. 168
  21. 141
  22. 213
  23. 176
  24. 185
  25. 287
  26. 168
  27. 211
  28. 222
  29. 167
  30. 188
  31. 257
  32. 148
  33. 126
  34. 123
  35. 198
  36. 152
  37. 207
  38. 158
  39. 145
  40. 184

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