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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 514 · 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. 1.22 + 53 + 74 + 87 =
  2. 2.71 + 20 + 25 + 49 =
  3. 3.40 + 83 + 31 + 39 =
  4. 4.79 + 60 + 53 + 39 =
  5. 5.63 + 52 + 23 + 88 =
  6. 6.45 + 72 + 60 + 29 =
  7. 7.52 + 31 + 39 + 60 =
  8. 8.36 + 15 + 66 + 49 =
  9. 9.30 + 16 + 82 + 29 =
  10. 10.29 + 35 + 40 + 84 =
  11. 11.51 + 54 + 42 + 15 =
  12. 12.29 + 55 + 12 + 61 =
  13. 13.52 + 64 + 59 + 68 =
  14. 14.36 + 50 + 58 + 84 =
  15. 15.33 + 72 + 31 + 69 =
  16. 16.77 + 88 + 45 + 11 =
  17. 17.54 + 42 + 73 + 70 =
  18. 18.44 + 16 + 35 + 67 =
  19. 19.52 + 42 + 89 + 19 =
  20. 20.29 + 37 + 48 + 29 =
  21. 21.19 + 20 + 51 + 31 =
  22. 22.88 + 37 + 17 + 29 =
  23. 23.76 + 20 + 21 + 40 =
  24. 24.23 + 49 + 52 + 14 =
  25. 25.39 + 65 + 16 + 33 =
  26. 26.88 + 26 + 36 + 64 =
  27. 27.68 + 50 + 47 + 25 =
  28. 28.16 + 45 + 66 + 21 =
  29. 29.36 + 50 + 60 + 89 =
  30. 30.77 + 87 + 44 + 43 =
  31. 31.11 + 61 + 22 + 82 =
  32. 32.18 + 66 + 63 + 43 =
  33. 33.19 + 78 + 47 + 33 =
  34. 34.67 + 22 + 62 + 38 =
  35. 35.58 + 15 + 48 + 60 =
  36. 36.74 + 34 + 17 + 64 =
  37. 37.73 + 82 + 82 + 70 =
  38. 38.57 + 50 + 18 + 74 =
  39. 39.75 + 41 + 65 + 66 =
  40. 40.79 + 80 + 74 + 38 =

Answer key

  1. 236
  2. 165
  3. 193
  4. 231
  5. 226
  6. 206
  7. 182
  8. 166
  9. 157
  10. 188
  11. 162
  12. 157
  13. 243
  14. 228
  15. 205
  16. 221
  17. 239
  18. 162
  19. 202
  20. 143
  21. 121
  22. 171
  23. 157
  24. 138
  25. 153
  26. 214
  27. 190
  28. 148
  29. 235
  30. 251
  31. 176
  32. 190
  33. 177
  34. 189
  35. 181
  36. 189
  37. 307
  38. 199
  39. 247
  40. 271

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