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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 793 · 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. 1.32 + 37 + 64 + 66 =
  2. 2.78 + 59 + 38 + 73 =
  3. 3.84 + 13 + 73 + 57 =
  4. 4.41 + 25 + 82 + 25 =
  5. 5.27 + 26 + 42 + 25 =
  6. 6.48 + 19 + 73 + 24 =
  7. 7.74 + 20 + 71 + 31 =
  8. 8.15 + 24 + 47 + 86 =
  9. 9.20 + 25 + 79 + 14 =
  10. 10.50 + 32 + 30 + 14 =
  11. 11.53 + 49 + 13 + 77 =
  12. 12.40 + 24 + 78 + 68 =
  13. 13.70 + 46 + 76 + 52 =
  14. 14.82 + 80 + 63 + 14 =
  15. 15.28 + 48 + 87 + 66 =
  16. 16.46 + 78 + 82 + 22 =
  17. 17.55 + 61 + 67 + 66 =
  18. 18.53 + 25 + 41 + 56 =
  19. 19.77 + 20 + 48 + 74 =
  20. 20.70 + 14 + 17 + 36 =
  21. 21.58 + 29 + 23 + 12 =
  22. 22.88 + 50 + 23 + 71 =
  23. 23.85 + 72 + 81 + 16 =
  24. 24.15 + 33 + 60 + 25 =
  25. 25.79 + 48 + 63 + 11 =
  26. 26.73 + 25 + 60 + 17 =
  27. 27.74 + 81 + 32 + 56 =
  28. 28.59 + 25 + 26 + 78 =
  29. 29.18 + 63 + 29 + 45 =
  30. 30.72 + 69 + 44 + 26 =
  31. 31.76 + 34 + 22 + 70 =
  32. 32.65 + 30 + 24 + 71 =
  33. 33.45 + 36 + 65 + 31 =
  34. 34.54 + 48 + 71 + 85 =
  35. 35.43 + 73 + 72 + 60 =
  36. 36.56 + 27 + 80 + 51 =
  37. 37.29 + 57 + 39 + 88 =
  38. 38.57 + 81 + 30 + 89 =
  39. 39.20 + 71 + 17 + 59 =
  40. 40.32 + 17 + 13 + 59 =

Answer key

  1. 199
  2. 248
  3. 227
  4. 173
  5. 120
  6. 164
  7. 196
  8. 172
  9. 138
  10. 126
  11. 192
  12. 210
  13. 244
  14. 239
  15. 229
  16. 228
  17. 249
  18. 175
  19. 219
  20. 137
  21. 122
  22. 232
  23. 254
  24. 133
  25. 201
  26. 175
  27. 243
  28. 188
  29. 155
  30. 211
  31. 202
  32. 190
  33. 177
  34. 258
  35. 248
  36. 214
  37. 213
  38. 257
  39. 167
  40. 121

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