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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 465 · 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. 1.34 + 43 + 33 + 52 =
  2. 2.62 + 27 + 30 + 18 =
  3. 3.73 + 35 + 79 + 58 =
  4. 4.30 + 76 + 80 + 20 =
  5. 5.33 + 23 + 16 + 27 =
  6. 6.89 + 35 + 43 + 78 =
  7. 7.22 + 89 + 43 + 48 =
  8. 8.33 + 32 + 77 + 44 =
  9. 9.19 + 32 + 79 + 82 =
  10. 10.71 + 47 + 64 + 88 =
  11. 11.28 + 14 + 27 + 78 =
  12. 12.80 + 67 + 22 + 54 =
  13. 13.23 + 48 + 60 + 34 =
  14. 14.84 + 61 + 20 + 59 =
  15. 15.27 + 84 + 25 + 23 =
  16. 16.86 + 37 + 18 + 67 =
  17. 17.72 + 66 + 85 + 74 =
  18. 18.51 + 56 + 31 + 89 =
  19. 19.86 + 32 + 35 + 59 =
  20. 20.17 + 72 + 51 + 23 =
  21. 21.41 + 28 + 41 + 58 =
  22. 22.52 + 30 + 53 + 26 =
  23. 23.66 + 40 + 36 + 32 =
  24. 24.40 + 23 + 60 + 50 =
  25. 25.20 + 89 + 31 + 86 =
  26. 26.74 + 71 + 84 + 23 =
  27. 27.16 + 55 + 66 + 58 =
  28. 28.80 + 27 + 24 + 75 =
  29. 29.51 + 60 + 70 + 23 =
  30. 30.44 + 33 + 83 + 35 =
  31. 31.68 + 85 + 72 + 80 =
  32. 32.65 + 40 + 85 + 26 =
  33. 33.53 + 69 + 20 + 64 =
  34. 34.41 + 26 + 30 + 24 =
  35. 35.81 + 30 + 77 + 28 =
  36. 36.35 + 45 + 86 + 82 =
  37. 37.52 + 46 + 60 + 49 =
  38. 38.30 + 23 + 53 + 44 =
  39. 39.67 + 23 + 18 + 26 =
  40. 40.59 + 32 + 74 + 43 =

Answer key

  1. 162
  2. 137
  3. 245
  4. 206
  5. 99
  6. 245
  7. 202
  8. 186
  9. 212
  10. 270
  11. 147
  12. 223
  13. 165
  14. 224
  15. 159
  16. 208
  17. 297
  18. 227
  19. 212
  20. 163
  21. 168
  22. 161
  23. 174
  24. 173
  25. 226
  26. 252
  27. 195
  28. 206
  29. 204
  30. 195
  31. 305
  32. 216
  33. 206
  34. 121
  35. 216
  36. 248
  37. 207
  38. 150
  39. 134
  40. 208

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