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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 884 · 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. 1.73 + 47 + 31 + 30 =
  2. 2.16 + 21 + 37 + 20 =
  3. 3.69 + 21 + 68 + 41 =
  4. 4.15 + 46 + 65 + 63 =
  5. 5.86 + 25 + 72 + 68 =
  6. 6.34 + 49 + 72 + 47 =
  7. 7.85 + 77 + 43 + 57 =
  8. 8.36 + 50 + 11 + 22 =
  9. 9.69 + 47 + 16 + 79 =
  10. 10.41 + 46 + 46 + 55 =
  11. 11.71 + 37 + 39 + 20 =
  12. 12.58 + 56 + 87 + 79 =
  13. 13.54 + 64 + 37 + 50 =
  14. 14.14 + 72 + 79 + 51 =
  15. 15.13 + 53 + 76 + 27 =
  16. 16.48 + 37 + 11 + 28 =
  17. 17.19 + 85 + 55 + 22 =
  18. 18.21 + 67 + 56 + 67 =
  19. 19.26 + 48 + 78 + 47 =
  20. 20.85 + 23 + 79 + 55 =
  21. 21.44 + 13 + 13 + 26 =
  22. 22.26 + 12 + 17 + 26 =
  23. 23.44 + 55 + 30 + 21 =
  24. 24.32 + 17 + 81 + 24 =
  25. 25.20 + 44 + 31 + 39 =
  26. 26.22 + 25 + 33 + 67 =
  27. 27.68 + 25 + 65 + 64 =
  28. 28.63 + 35 + 11 + 43 =
  29. 29.51 + 35 + 74 + 74 =
  30. 30.87 + 52 + 23 + 51 =
  31. 31.14 + 16 + 25 + 29 =
  32. 32.33 + 13 + 14 + 36 =
  33. 33.23 + 85 + 49 + 67 =
  34. 34.77 + 89 + 38 + 23 =
  35. 35.74 + 54 + 40 + 37 =
  36. 36.33 + 53 + 22 + 36 =
  37. 37.74 + 23 + 46 + 22 =
  38. 38.27 + 70 + 70 + 21 =
  39. 39.63 + 24 + 87 + 65 =
  40. 40.80 + 56 + 86 + 78 =

Answer key

  1. 181
  2. 94
  3. 199
  4. 189
  5. 251
  6. 202
  7. 262
  8. 119
  9. 211
  10. 188
  11. 167
  12. 280
  13. 205
  14. 216
  15. 169
  16. 124
  17. 181
  18. 211
  19. 199
  20. 242
  21. 96
  22. 81
  23. 150
  24. 154
  25. 134
  26. 147
  27. 222
  28. 152
  29. 234
  30. 213
  31. 84
  32. 96
  33. 224
  34. 227
  35. 205
  36. 144
  37. 165
  38. 188
  39. 239
  40. 300

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