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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 19 · 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. 1.62 + 40 + 51 + 29 =
  2. 2.16 + 25 + 34 + 24 =
  3. 3.42 + 20 + 84 + 87 =
  4. 4.43 + 81 + 51 + 38 =
  5. 5.54 + 56 + 68 + 52 =
  6. 6.74 + 57 + 55 + 82 =
  7. 7.36 + 67 + 67 + 72 =
  8. 8.63 + 53 + 82 + 65 =
  9. 9.47 + 33 + 40 + 13 =
  10. 10.12 + 71 + 22 + 12 =
  11. 11.62 + 26 + 15 + 16 =
  12. 12.60 + 86 + 25 + 24 =
  13. 13.40 + 39 + 53 + 63 =
  14. 14.66 + 72 + 41 + 56 =
  15. 15.16 + 12 + 88 + 42 =
  16. 16.25 + 89 + 70 + 14 =
  17. 17.21 + 16 + 32 + 49 =
  18. 18.53 + 53 + 45 + 31 =
  19. 19.31 + 68 + 54 + 14 =
  20. 20.42 + 80 + 19 + 83 =
  21. 21.20 + 89 + 89 + 39 =
  22. 22.88 + 86 + 70 + 26 =
  23. 23.36 + 57 + 40 + 73 =
  24. 24.79 + 18 + 67 + 70 =
  25. 25.83 + 72 + 87 + 39 =
  26. 26.88 + 34 + 67 + 61 =
  27. 27.75 + 76 + 20 + 80 =
  28. 28.32 + 32 + 36 + 27 =
  29. 29.58 + 36 + 27 + 60 =
  30. 30.25 + 18 + 80 + 47 =
  31. 31.28 + 60 + 30 + 40 =
  32. 32.71 + 46 + 37 + 25 =
  33. 33.50 + 43 + 16 + 60 =
  34. 34.89 + 14 + 32 + 22 =
  35. 35.68 + 89 + 19 + 23 =
  36. 36.19 + 77 + 20 + 20 =
  37. 37.89 + 48 + 80 + 48 =
  38. 38.59 + 61 + 66 + 31 =
  39. 39.77 + 18 + 56 + 77 =
  40. 40.52 + 86 + 59 + 49 =

Answer key

  1. 182
  2. 99
  3. 233
  4. 213
  5. 230
  6. 268
  7. 242
  8. 263
  9. 133
  10. 117
  11. 119
  12. 195
  13. 195
  14. 235
  15. 158
  16. 198
  17. 118
  18. 182
  19. 167
  20. 224
  21. 237
  22. 270
  23. 206
  24. 234
  25. 281
  26. 250
  27. 251
  28. 127
  29. 181
  30. 170
  31. 158
  32. 179
  33. 169
  34. 157
  35. 199
  36. 136
  37. 265
  38. 217
  39. 228
  40. 246

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