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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 972 · 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. 1.68 + 71 + 30 + 26 =
  2. 2.85 + 38 + 41 + 14 =
  3. 3.79 + 80 + 33 + 47 =
  4. 4.46 + 28 + 87 + 59 =
  5. 5.14 + 38 + 26 + 38 =
  6. 6.48 + 30 + 35 + 20 =
  7. 7.61 + 86 + 27 + 43 =
  8. 8.40 + 25 + 43 + 26 =
  9. 9.40 + 14 + 25 + 80 =
  10. 10.88 + 50 + 50 + 46 =
  11. 11.54 + 72 + 53 + 43 =
  12. 12.33 + 27 + 46 + 83 =
  13. 13.38 + 22 + 57 + 81 =
  14. 14.77 + 22 + 88 + 28 =
  15. 15.24 + 29 + 88 + 81 =
  16. 16.28 + 77 + 27 + 56 =
  17. 17.19 + 26 + 78 + 56 =
  18. 18.60 + 56 + 54 + 83 =
  19. 19.46 + 29 + 23 + 16 =
  20. 20.33 + 75 + 86 + 25 =
  21. 21.11 + 29 + 73 + 85 =
  22. 22.69 + 69 + 15 + 57 =
  23. 23.20 + 40 + 74 + 88 =
  24. 24.17 + 29 + 69 + 35 =
  25. 25.33 + 32 + 18 + 65 =
  26. 26.46 + 88 + 11 + 39 =
  27. 27.54 + 84 + 32 + 11 =
  28. 28.82 + 72 + 50 + 22 =
  29. 29.62 + 81 + 32 + 76 =
  30. 30.51 + 63 + 60 + 78 =
  31. 31.27 + 27 + 85 + 19 =
  32. 32.62 + 17 + 48 + 75 =
  33. 33.28 + 13 + 67 + 19 =
  34. 34.67 + 89 + 20 + 15 =
  35. 35.73 + 20 + 18 + 20 =
  36. 36.15 + 26 + 15 + 22 =
  37. 37.23 + 39 + 56 + 21 =
  38. 38.21 + 27 + 59 + 32 =
  39. 39.60 + 48 + 30 + 57 =
  40. 40.25 + 56 + 56 + 47 =

Answer key

  1. 195
  2. 178
  3. 239
  4. 220
  5. 116
  6. 133
  7. 217
  8. 134
  9. 159
  10. 234
  11. 222
  12. 189
  13. 198
  14. 215
  15. 222
  16. 188
  17. 179
  18. 253
  19. 114
  20. 219
  21. 198
  22. 210
  23. 222
  24. 150
  25. 148
  26. 184
  27. 181
  28. 226
  29. 251
  30. 252
  31. 158
  32. 202
  33. 127
  34. 191
  35. 131
  36. 78
  37. 139
  38. 139
  39. 195
  40. 184

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