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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 974 · 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. 1.35 + 58 + 89 + 87 =
  2. 2.61 + 49 + 68 + 13 =
  3. 3.19 + 29 + 20 + 23 =
  4. 4.23 + 44 + 56 + 18 =
  5. 5.87 + 53 + 44 + 50 =
  6. 6.46 + 12 + 74 + 46 =
  7. 7.41 + 33 + 81 + 22 =
  8. 8.56 + 54 + 24 + 76 =
  9. 9.19 + 61 + 51 + 11 =
  10. 10.79 + 39 + 78 + 41 =
  11. 11.76 + 22 + 47 + 15 =
  12. 12.71 + 53 + 33 + 53 =
  13. 13.52 + 55 + 36 + 25 =
  14. 14.57 + 73 + 56 + 28 =
  15. 15.84 + 54 + 84 + 72 =
  16. 16.67 + 22 + 71 + 88 =
  17. 17.62 + 38 + 66 + 48 =
  18. 18.66 + 38 + 66 + 21 =
  19. 19.59 + 49 + 44 + 84 =
  20. 20.36 + 49 + 21 + 74 =
  21. 21.54 + 58 + 23 + 73 =
  22. 22.22 + 70 + 69 + 24 =
  23. 23.34 + 15 + 29 + 17 =
  24. 24.69 + 77 + 57 + 80 =
  25. 25.26 + 83 + 14 + 38 =
  26. 26.78 + 26 + 64 + 86 =
  27. 27.83 + 20 + 26 + 57 =
  28. 28.73 + 89 + 69 + 74 =
  29. 29.37 + 65 + 65 + 57 =
  30. 30.56 + 28 + 61 + 75 =
  31. 31.20 + 87 + 35 + 15 =
  32. 32.33 + 47 + 28 + 61 =
  33. 33.34 + 13 + 82 + 63 =
  34. 34.58 + 59 + 30 + 86 =
  35. 35.60 + 49 + 64 + 61 =
  36. 36.26 + 28 + 27 + 30 =
  37. 37.17 + 41 + 63 + 62 =
  38. 38.26 + 87 + 18 + 34 =
  39. 39.65 + 66 + 12 + 58 =
  40. 40.74 + 69 + 34 + 32 =

Answer key

  1. 269
  2. 191
  3. 91
  4. 141
  5. 234
  6. 178
  7. 177
  8. 210
  9. 142
  10. 237
  11. 160
  12. 210
  13. 168
  14. 214
  15. 294
  16. 248
  17. 214
  18. 191
  19. 236
  20. 180
  21. 208
  22. 185
  23. 95
  24. 283
  25. 161
  26. 254
  27. 186
  28. 305
  29. 224
  30. 220
  31. 157
  32. 169
  33. 192
  34. 233
  35. 234
  36. 111
  37. 183
  38. 165
  39. 201
  40. 209

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