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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 206 · 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. 1.15 + 37 + 84 + 36 =
  2. 2.40 + 46 + 33 + 14 =
  3. 3.12 + 27 + 38 + 20 =
  4. 4.82 + 36 + 15 + 38 =
  5. 5.47 + 16 + 27 + 53 =
  6. 6.22 + 64 + 71 + 13 =
  7. 7.62 + 15 + 75 + 71 =
  8. 8.68 + 12 + 79 + 85 =
  9. 9.27 + 57 + 77 + 59 =
  10. 10.41 + 29 + 56 + 11 =
  11. 11.43 + 49 + 27 + 42 =
  12. 12.58 + 79 + 62 + 12 =
  13. 13.22 + 53 + 55 + 62 =
  14. 14.54 + 84 + 28 + 67 =
  15. 15.30 + 26 + 12 + 55 =
  16. 16.47 + 23 + 75 + 32 =
  17. 17.73 + 17 + 55 + 11 =
  18. 18.58 + 53 + 43 + 14 =
  19. 19.66 + 21 + 54 + 80 =
  20. 20.30 + 63 + 34 + 44 =
  21. 21.43 + 88 + 31 + 64 =
  22. 22.13 + 85 + 62 + 86 =
  23. 23.26 + 67 + 48 + 81 =
  24. 24.80 + 43 + 25 + 59 =
  25. 25.84 + 52 + 75 + 16 =
  26. 26.24 + 17 + 59 + 11 =
  27. 27.32 + 62 + 24 + 12 =
  28. 28.84 + 59 + 29 + 85 =
  29. 29.67 + 31 + 42 + 30 =
  30. 30.42 + 74 + 43 + 89 =
  31. 31.35 + 36 + 15 + 47 =
  32. 32.41 + 86 + 27 + 60 =
  33. 33.15 + 25 + 40 + 88 =
  34. 34.16 + 38 + 27 + 61 =
  35. 35.76 + 17 + 42 + 71 =
  36. 36.87 + 29 + 56 + 12 =
  37. 37.43 + 25 + 23 + 54 =
  38. 38.84 + 73 + 69 + 23 =
  39. 39.70 + 25 + 84 + 62 =
  40. 40.84 + 23 + 86 + 36 =

Answer key

  1. 172
  2. 133
  3. 97
  4. 171
  5. 143
  6. 170
  7. 223
  8. 244
  9. 220
  10. 137
  11. 161
  12. 211
  13. 192
  14. 233
  15. 123
  16. 177
  17. 156
  18. 168
  19. 221
  20. 171
  21. 226
  22. 246
  23. 222
  24. 207
  25. 227
  26. 111
  27. 130
  28. 257
  29. 170
  30. 248
  31. 133
  32. 214
  33. 168
  34. 142
  35. 206
  36. 184
  37. 145
  38. 249
  39. 241
  40. 229

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