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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 984 · 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. 1.23 + 59 + 88 + 32 =
  2. 2.83 + 85 + 87 + 76 =
  3. 3.62 + 30 + 53 + 55 =
  4. 4.11 + 33 + 25 + 21 =
  5. 5.75 + 52 + 23 + 82 =
  6. 6.75 + 77 + 23 + 72 =
  7. 7.17 + 31 + 67 + 33 =
  8. 8.19 + 51 + 75 + 88 =
  9. 9.13 + 79 + 61 + 88 =
  10. 10.13 + 31 + 83 + 25 =
  11. 11.44 + 81 + 23 + 23 =
  12. 12.16 + 11 + 40 + 21 =
  13. 13.56 + 52 + 55 + 56 =
  14. 14.29 + 35 + 57 + 32 =
  15. 15.80 + 81 + 27 + 65 =
  16. 16.84 + 37 + 68 + 48 =
  17. 17.47 + 16 + 21 + 40 =
  18. 18.51 + 28 + 88 + 87 =
  19. 19.30 + 54 + 52 + 69 =
  20. 20.84 + 12 + 17 + 22 =
  21. 21.43 + 42 + 26 + 69 =
  22. 22.54 + 87 + 70 + 43 =
  23. 23.77 + 16 + 43 + 75 =
  24. 24.65 + 76 + 29 + 63 =
  25. 25.67 + 20 + 71 + 54 =
  26. 26.39 + 79 + 88 + 45 =
  27. 27.21 + 69 + 84 + 55 =
  28. 28.13 + 48 + 76 + 33 =
  29. 29.28 + 17 + 55 + 18 =
  30. 30.70 + 36 + 63 + 62 =
  31. 31.56 + 82 + 87 + 35 =
  32. 32.85 + 57 + 17 + 68 =
  33. 33.21 + 49 + 80 + 63 =
  34. 34.21 + 54 + 66 + 64 =
  35. 35.40 + 32 + 57 + 25 =
  36. 36.29 + 18 + 68 + 56 =
  37. 37.35 + 33 + 47 + 73 =
  38. 38.60 + 14 + 11 + 44 =
  39. 39.62 + 19 + 61 + 44 =
  40. 40.40 + 64 + 70 + 49 =

Answer key

  1. 202
  2. 331
  3. 200
  4. 90
  5. 232
  6. 247
  7. 148
  8. 233
  9. 241
  10. 152
  11. 171
  12. 88
  13. 219
  14. 153
  15. 253
  16. 237
  17. 124
  18. 254
  19. 205
  20. 135
  21. 180
  22. 254
  23. 211
  24. 233
  25. 212
  26. 251
  27. 229
  28. 170
  29. 118
  30. 231
  31. 260
  32. 227
  33. 213
  34. 205
  35. 154
  36. 171
  37. 188
  38. 129
  39. 186
  40. 223

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