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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 717 · 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. 1.21 + 55 + 49 + 62 =
  2. 2.15 + 41 + 50 + 46 =
  3. 3.35 + 60 + 41 + 81 =
  4. 4.45 + 26 + 62 + 56 =
  5. 5.22 + 18 + 45 + 22 =
  6. 6.77 + 21 + 51 + 18 =
  7. 7.86 + 58 + 39 + 52 =
  8. 8.51 + 49 + 52 + 53 =
  9. 9.25 + 28 + 34 + 26 =
  10. 10.41 + 77 + 39 + 42 =
  11. 11.52 + 36 + 20 + 15 =
  12. 12.75 + 48 + 28 + 79 =
  13. 13.38 + 37 + 75 + 87 =
  14. 14.77 + 60 + 74 + 45 =
  15. 15.62 + 74 + 82 + 34 =
  16. 16.27 + 58 + 42 + 61 =
  17. 17.63 + 45 + 16 + 86 =
  18. 18.77 + 52 + 54 + 58 =
  19. 19.42 + 25 + 34 + 63 =
  20. 20.81 + 29 + 69 + 15 =
  21. 21.67 + 18 + 86 + 30 =
  22. 22.60 + 29 + 19 + 83 =
  23. 23.72 + 76 + 27 + 66 =
  24. 24.88 + 34 + 28 + 28 =
  25. 25.80 + 61 + 21 + 19 =
  26. 26.24 + 23 + 19 + 30 =
  27. 27.82 + 26 + 54 + 70 =
  28. 28.63 + 89 + 45 + 47 =
  29. 29.16 + 31 + 40 + 82 =
  30. 30.13 + 55 + 57 + 26 =
  31. 31.89 + 82 + 68 + 76 =
  32. 32.76 + 46 + 81 + 33 =
  33. 33.58 + 26 + 11 + 19 =
  34. 34.55 + 21 + 72 + 76 =
  35. 35.43 + 29 + 37 + 63 =
  36. 36.61 + 51 + 47 + 68 =
  37. 37.26 + 26 + 55 + 33 =
  38. 38.22 + 44 + 57 + 25 =
  39. 39.33 + 88 + 73 + 78 =
  40. 40.42 + 84 + 38 + 68 =

Answer key

  1. 187
  2. 152
  3. 217
  4. 189
  5. 107
  6. 167
  7. 235
  8. 205
  9. 113
  10. 199
  11. 123
  12. 230
  13. 237
  14. 256
  15. 252
  16. 188
  17. 210
  18. 241
  19. 164
  20. 194
  21. 201
  22. 191
  23. 241
  24. 178
  25. 181
  26. 96
  27. 232
  28. 244
  29. 169
  30. 151
  31. 315
  32. 236
  33. 114
  34. 224
  35. 172
  36. 227
  37. 140
  38. 148
  39. 272
  40. 232

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