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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 228 · 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. 1.12 + 82 + 47 + 59 =
  2. 2.21 + 54 + 63 + 67 =
  3. 3.31 + 39 + 16 + 82 =
  4. 4.62 + 69 + 79 + 60 =
  5. 5.61 + 33 + 40 + 28 =
  6. 6.27 + 82 + 27 + 42 =
  7. 7.71 + 27 + 40 + 62 =
  8. 8.18 + 70 + 86 + 24 =
  9. 9.30 + 35 + 84 + 85 =
  10. 10.89 + 16 + 28 + 31 =
  11. 11.18 + 33 + 81 + 33 =
  12. 12.79 + 49 + 58 + 11 =
  13. 13.11 + 79 + 55 + 82 =
  14. 14.32 + 44 + 77 + 25 =
  15. 15.25 + 58 + 79 + 55 =
  16. 16.65 + 51 + 88 + 78 =
  17. 17.69 + 82 + 72 + 30 =
  18. 18.57 + 53 + 19 + 43 =
  19. 19.77 + 53 + 39 + 55 =
  20. 20.88 + 37 + 17 + 31 =
  21. 21.87 + 25 + 23 + 73 =
  22. 22.75 + 76 + 25 + 44 =
  23. 23.42 + 12 + 57 + 17 =
  24. 24.79 + 43 + 22 + 26 =
  25. 25.46 + 78 + 54 + 88 =
  26. 26.76 + 32 + 21 + 33 =
  27. 27.86 + 18 + 15 + 59 =
  28. 28.20 + 60 + 65 + 19 =
  29. 29.73 + 27 + 60 + 22 =
  30. 30.11 + 45 + 79 + 25 =
  31. 31.48 + 11 + 71 + 79 =
  32. 32.24 + 11 + 40 + 24 =
  33. 33.41 + 48 + 23 + 43 =
  34. 34.18 + 66 + 69 + 22 =
  35. 35.80 + 68 + 77 + 37 =
  36. 36.80 + 16 + 38 + 48 =
  37. 37.89 + 29 + 70 + 43 =
  38. 38.80 + 77 + 51 + 39 =
  39. 39.33 + 79 + 67 + 24 =
  40. 40.87 + 76 + 53 + 82 =

Answer key

  1. 200
  2. 205
  3. 168
  4. 270
  5. 162
  6. 178
  7. 200
  8. 198
  9. 234
  10. 164
  11. 165
  12. 197
  13. 227
  14. 178
  15. 217
  16. 282
  17. 253
  18. 172
  19. 224
  20. 173
  21. 208
  22. 220
  23. 128
  24. 170
  25. 266
  26. 162
  27. 178
  28. 164
  29. 182
  30. 160
  31. 209
  32. 99
  33. 155
  34. 175
  35. 262
  36. 182
  37. 231
  38. 247
  39. 203
  40. 298

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