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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 107 · 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. 1.53 + 25 + 59 + 72 =
  2. 2.30 + 28 + 13 + 36 =
  3. 3.66 + 59 + 26 + 26 =
  4. 4.49 + 14 + 78 + 18 =
  5. 5.55 + 14 + 34 + 75 =
  6. 6.24 + 44 + 55 + 46 =
  7. 7.69 + 28 + 51 + 27 =
  8. 8.76 + 39 + 14 + 43 =
  9. 9.36 + 48 + 82 + 43 =
  10. 10.11 + 52 + 47 + 77 =
  11. 11.40 + 17 + 60 + 20 =
  12. 12.78 + 62 + 27 + 47 =
  13. 13.63 + 76 + 57 + 65 =
  14. 14.61 + 14 + 50 + 47 =
  15. 15.22 + 31 + 82 + 13 =
  16. 16.53 + 32 + 25 + 27 =
  17. 17.86 + 47 + 13 + 88 =
  18. 18.49 + 33 + 61 + 33 =
  19. 19.70 + 83 + 14 + 86 =
  20. 20.87 + 54 + 18 + 46 =
  21. 21.64 + 44 + 68 + 63 =
  22. 22.31 + 27 + 16 + 42 =
  23. 23.19 + 70 + 61 + 26 =
  24. 24.26 + 21 + 35 + 27 =
  25. 25.60 + 79 + 42 + 14 =
  26. 26.86 + 30 + 21 + 13 =
  27. 27.13 + 60 + 60 + 66 =
  28. 28.88 + 42 + 75 + 87 =
  29. 29.15 + 13 + 58 + 25 =
  30. 30.64 + 28 + 86 + 32 =
  31. 31.68 + 78 + 39 + 67 =
  32. 32.11 + 72 + 27 + 40 =
  33. 33.67 + 57 + 13 + 44 =
  34. 34.86 + 48 + 66 + 72 =
  35. 35.66 + 12 + 58 + 64 =
  36. 36.73 + 25 + 75 + 16 =
  37. 37.53 + 63 + 25 + 72 =
  38. 38.70 + 63 + 25 + 27 =
  39. 39.72 + 26 + 23 + 79 =
  40. 40.60 + 48 + 28 + 45 =

Answer key

  1. 209
  2. 107
  3. 177
  4. 159
  5. 178
  6. 169
  7. 175
  8. 172
  9. 209
  10. 187
  11. 137
  12. 214
  13. 261
  14. 172
  15. 148
  16. 137
  17. 234
  18. 176
  19. 253
  20. 205
  21. 239
  22. 116
  23. 176
  24. 109
  25. 195
  26. 150
  27. 199
  28. 292
  29. 111
  30. 210
  31. 252
  32. 150
  33. 181
  34. 272
  35. 200
  36. 189
  37. 213
  38. 185
  39. 200
  40. 181

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