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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 659 · 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 + 54 + 34 + 32 =
  2. 2.87 + 78 + 66 + 68 =
  3. 3.49 + 63 + 27 + 21 =
  4. 4.11 + 56 + 38 + 51 =
  5. 5.42 + 36 + 56 + 30 =
  6. 6.53 + 60 + 30 + 58 =
  7. 7.55 + 30 + 71 + 55 =
  8. 8.24 + 23 + 44 + 63 =
  9. 9.13 + 31 + 75 + 15 =
  10. 10.86 + 67 + 31 + 39 =
  11. 11.14 + 15 + 19 + 16 =
  12. 12.13 + 18 + 58 + 55 =
  13. 13.23 + 33 + 70 + 12 =
  14. 14.71 + 27 + 58 + 32 =
  15. 15.18 + 34 + 45 + 17 =
  16. 16.25 + 28 + 54 + 35 =
  17. 17.60 + 36 + 48 + 16 =
  18. 18.71 + 65 + 52 + 25 =
  19. 19.45 + 86 + 61 + 80 =
  20. 20.45 + 88 + 19 + 80 =
  21. 21.51 + 73 + 54 + 32 =
  22. 22.57 + 27 + 46 + 75 =
  23. 23.36 + 79 + 29 + 82 =
  24. 24.66 + 26 + 14 + 38 =
  25. 25.16 + 15 + 64 + 72 =
  26. 26.12 + 75 + 85 + 88 =
  27. 27.59 + 32 + 63 + 22 =
  28. 28.32 + 32 + 46 + 70 =
  29. 29.89 + 37 + 69 + 59 =
  30. 30.50 + 78 + 53 + 23 =
  31. 31.38 + 72 + 69 + 31 =
  32. 32.85 + 12 + 89 + 82 =
  33. 33.46 + 33 + 66 + 28 =
  34. 34.75 + 46 + 59 + 56 =
  35. 35.30 + 86 + 80 + 88 =
  36. 36.41 + 21 + 25 + 75 =
  37. 37.69 + 54 + 81 + 60 =
  38. 38.33 + 49 + 32 + 82 =
  39. 39.80 + 83 + 46 + 67 =
  40. 40.36 + 82 + 47 + 69 =

Answer key

  1. 132
  2. 299
  3. 160
  4. 156
  5. 164
  6. 201
  7. 211
  8. 154
  9. 134
  10. 223
  11. 64
  12. 144
  13. 138
  14. 188
  15. 114
  16. 142
  17. 160
  18. 213
  19. 272
  20. 232
  21. 210
  22. 205
  23. 226
  24. 144
  25. 167
  26. 260
  27. 176
  28. 180
  29. 254
  30. 204
  31. 210
  32. 268
  33. 173
  34. 236
  35. 284
  36. 162
  37. 264
  38. 196
  39. 276
  40. 234

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