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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 194 · 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. 1.13 + 15 + 74 + 55 =
  2. 2.56 + 85 + 21 + 88 =
  3. 3.30 + 48 + 72 + 11 =
  4. 4.22 + 86 + 59 + 16 =
  5. 5.31 + 87 + 76 + 27 =
  6. 6.49 + 28 + 64 + 28 =
  7. 7.13 + 21 + 16 + 18 =
  8. 8.52 + 18 + 19 + 14 =
  9. 9.19 + 68 + 44 + 82 =
  10. 10.18 + 49 + 81 + 11 =
  11. 11.83 + 16 + 36 + 27 =
  12. 12.17 + 26 + 84 + 58 =
  13. 13.47 + 41 + 33 + 78 =
  14. 14.33 + 81 + 23 + 49 =
  15. 15.45 + 70 + 21 + 86 =
  16. 16.57 + 35 + 26 + 13 =
  17. 17.24 + 22 + 35 + 87 =
  18. 18.86 + 48 + 74 + 28 =
  19. 19.28 + 26 + 22 + 27 =
  20. 20.84 + 51 + 66 + 83 =
  21. 21.89 + 24 + 68 + 66 =
  22. 22.67 + 43 + 53 + 35 =
  23. 23.21 + 73 + 41 + 33 =
  24. 24.43 + 23 + 51 + 29 =
  25. 25.40 + 73 + 85 + 16 =
  26. 26.81 + 82 + 80 + 54 =
  27. 27.32 + 53 + 82 + 80 =
  28. 28.34 + 51 + 78 + 58 =
  29. 29.20 + 41 + 51 + 20 =
  30. 30.69 + 21 + 43 + 53 =
  31. 31.55 + 21 + 86 + 46 =
  32. 32.28 + 39 + 13 + 41 =
  33. 33.62 + 15 + 58 + 88 =
  34. 34.34 + 23 + 27 + 33 =
  35. 35.27 + 50 + 77 + 81 =
  36. 36.20 + 27 + 84 + 80 =
  37. 37.73 + 14 + 37 + 74 =
  38. 38.16 + 70 + 53 + 57 =
  39. 39.33 + 34 + 30 + 43 =
  40. 40.75 + 32 + 23 + 83 =

Answer key

  1. 157
  2. 250
  3. 161
  4. 183
  5. 221
  6. 169
  7. 68
  8. 103
  9. 213
  10. 159
  11. 162
  12. 185
  13. 199
  14. 186
  15. 222
  16. 131
  17. 168
  18. 236
  19. 103
  20. 284
  21. 247
  22. 198
  23. 168
  24. 146
  25. 214
  26. 297
  27. 247
  28. 221
  29. 132
  30. 186
  31. 208
  32. 121
  33. 223
  34. 117
  35. 235
  36. 211
  37. 198
  38. 196
  39. 140
  40. 213

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