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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 572 · 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. 1.47 + 11 + 36 + 68 =
  2. 2.81 + 64 + 46 + 51 =
  3. 3.67 + 86 + 30 + 46 =
  4. 4.86 + 47 + 89 + 35 =
  5. 5.18 + 76 + 70 + 32 =
  6. 6.27 + 13 + 27 + 77 =
  7. 7.57 + 51 + 88 + 47 =
  8. 8.87 + 52 + 84 + 45 =
  9. 9.66 + 83 + 27 + 13 =
  10. 10.81 + 54 + 69 + 53 =
  11. 11.32 + 27 + 45 + 84 =
  12. 12.45 + 45 + 31 + 89 =
  13. 13.28 + 35 + 15 + 73 =
  14. 14.13 + 70 + 43 + 47 =
  15. 15.55 + 48 + 31 + 46 =
  16. 16.65 + 34 + 35 + 31 =
  17. 17.69 + 58 + 65 + 41 =
  18. 18.45 + 47 + 28 + 86 =
  19. 19.51 + 11 + 89 + 49 =
  20. 20.41 + 50 + 63 + 25 =
  21. 21.65 + 82 + 48 + 32 =
  22. 22.19 + 40 + 20 + 80 =
  23. 23.26 + 44 + 27 + 68 =
  24. 24.19 + 89 + 59 + 45 =
  25. 25.48 + 28 + 88 + 24 =
  26. 26.41 + 28 + 68 + 70 =
  27. 27.13 + 56 + 47 + 52 =
  28. 28.52 + 32 + 31 + 16 =
  29. 29.71 + 24 + 73 + 89 =
  30. 30.20 + 78 + 58 + 20 =
  31. 31.34 + 66 + 53 + 72 =
  32. 32.11 + 84 + 19 + 66 =
  33. 33.29 + 53 + 82 + 56 =
  34. 34.45 + 28 + 36 + 88 =
  35. 35.76 + 25 + 27 + 16 =
  36. 36.68 + 43 + 73 + 48 =
  37. 37.77 + 30 + 23 + 13 =
  38. 38.49 + 69 + 22 + 52 =
  39. 39.72 + 51 + 81 + 75 =
  40. 40.32 + 37 + 80 + 22 =

Answer key

  1. 162
  2. 242
  3. 229
  4. 257
  5. 196
  6. 144
  7. 243
  8. 268
  9. 189
  10. 257
  11. 188
  12. 210
  13. 151
  14. 173
  15. 180
  16. 165
  17. 233
  18. 206
  19. 200
  20. 179
  21. 227
  22. 159
  23. 165
  24. 212
  25. 188
  26. 207
  27. 168
  28. 131
  29. 257
  30. 176
  31. 225
  32. 180
  33. 220
  34. 197
  35. 144
  36. 232
  37. 143
  38. 192
  39. 279
  40. 171

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