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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 213 · 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. 1.16 + 24 + 55 + 24 =
  2. 2.76 + 63 + 39 + 20 =
  3. 3.34 + 86 + 88 + 80 =
  4. 4.84 + 56 + 38 + 44 =
  5. 5.77 + 13 + 47 + 60 =
  6. 6.51 + 19 + 75 + 46 =
  7. 7.35 + 45 + 42 + 83 =
  8. 8.83 + 58 + 48 + 43 =
  9. 9.80 + 18 + 42 + 49 =
  10. 10.66 + 42 + 25 + 16 =
  11. 11.36 + 67 + 20 + 50 =
  12. 12.34 + 77 + 29 + 12 =
  13. 13.71 + 42 + 66 + 13 =
  14. 14.32 + 17 + 34 + 54 =
  15. 15.89 + 72 + 60 + 85 =
  16. 16.88 + 58 + 70 + 32 =
  17. 17.40 + 35 + 47 + 75 =
  18. 18.40 + 25 + 76 + 33 =
  19. 19.82 + 85 + 17 + 75 =
  20. 20.83 + 57 + 24 + 80 =
  21. 21.79 + 31 + 84 + 65 =
  22. 22.86 + 35 + 51 + 49 =
  23. 23.62 + 54 + 41 + 49 =
  24. 24.26 + 41 + 83 + 67 =
  25. 25.13 + 25 + 45 + 34 =
  26. 26.51 + 21 + 82 + 48 =
  27. 27.21 + 14 + 53 + 47 =
  28. 28.85 + 58 + 26 + 20 =
  29. 29.58 + 73 + 26 + 37 =
  30. 30.45 + 28 + 44 + 54 =
  31. 31.32 + 53 + 69 + 81 =
  32. 32.30 + 28 + 17 + 69 =
  33. 33.25 + 28 + 72 + 38 =
  34. 34.19 + 29 + 59 + 61 =
  35. 35.62 + 17 + 25 + 49 =
  36. 36.48 + 17 + 38 + 18 =
  37. 37.16 + 37 + 63 + 87 =
  38. 38.67 + 77 + 12 + 34 =
  39. 39.61 + 70 + 62 + 17 =
  40. 40.48 + 85 + 61 + 66 =

Answer key

  1. 119
  2. 198
  3. 288
  4. 222
  5. 197
  6. 191
  7. 205
  8. 232
  9. 189
  10. 149
  11. 173
  12. 152
  13. 192
  14. 137
  15. 306
  16. 248
  17. 197
  18. 174
  19. 259
  20. 244
  21. 259
  22. 221
  23. 206
  24. 217
  25. 117
  26. 202
  27. 135
  28. 189
  29. 194
  30. 171
  31. 235
  32. 144
  33. 163
  34. 168
  35. 153
  36. 121
  37. 203
  38. 190
  39. 210
  40. 260

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