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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 763 · 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. 1.49 + 32 + 81 + 56 =
  2. 2.14 + 59 + 43 + 15 =
  3. 3.83 + 24 + 67 + 44 =
  4. 4.21 + 80 + 53 + 23 =
  5. 5.12 + 37 + 77 + 73 =
  6. 6.56 + 43 + 68 + 46 =
  7. 7.87 + 11 + 50 + 75 =
  8. 8.47 + 16 + 36 + 18 =
  9. 9.72 + 21 + 85 + 11 =
  10. 10.35 + 24 + 52 + 63 =
  11. 11.53 + 28 + 76 + 37 =
  12. 12.15 + 12 + 42 + 21 =
  13. 13.47 + 26 + 62 + 83 =
  14. 14.15 + 26 + 65 + 35 =
  15. 15.22 + 73 + 14 + 53 =
  16. 16.55 + 15 + 52 + 23 =
  17. 17.26 + 35 + 28 + 29 =
  18. 18.29 + 87 + 37 + 19 =
  19. 19.85 + 23 + 40 + 27 =
  20. 20.80 + 72 + 51 + 54 =
  21. 21.23 + 39 + 78 + 52 =
  22. 22.31 + 78 + 29 + 15 =
  23. 23.39 + 29 + 54 + 13 =
  24. 24.15 + 40 + 73 + 15 =
  25. 25.58 + 44 + 24 + 86 =
  26. 26.84 + 20 + 89 + 86 =
  27. 27.27 + 60 + 43 + 24 =
  28. 28.60 + 74 + 31 + 44 =
  29. 29.89 + 87 + 67 + 13 =
  30. 30.58 + 41 + 11 + 69 =
  31. 31.27 + 21 + 32 + 89 =
  32. 32.39 + 73 + 83 + 14 =
  33. 33.68 + 24 + 46 + 11 =
  34. 34.47 + 18 + 41 + 79 =
  35. 35.69 + 47 + 53 + 70 =
  36. 36.44 + 23 + 77 + 86 =
  37. 37.52 + 71 + 48 + 21 =
  38. 38.14 + 33 + 42 + 38 =
  39. 39.28 + 57 + 71 + 42 =
  40. 40.43 + 25 + 67 + 88 =

Answer key

  1. 218
  2. 131
  3. 218
  4. 177
  5. 199
  6. 213
  7. 223
  8. 117
  9. 189
  10. 174
  11. 194
  12. 90
  13. 218
  14. 141
  15. 162
  16. 145
  17. 118
  18. 172
  19. 175
  20. 257
  21. 192
  22. 153
  23. 135
  24. 143
  25. 212
  26. 279
  27. 154
  28. 209
  29. 256
  30. 179
  31. 169
  32. 209
  33. 149
  34. 185
  35. 239
  36. 230
  37. 192
  38. 127
  39. 198
  40. 223

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