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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 700 · 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. 1.24 + 15 + 63 + 54 =
  2. 2.14 + 66 + 82 + 60 =
  3. 3.73 + 89 + 45 + 17 =
  4. 4.24 + 61 + 82 + 22 =
  5. 5.23 + 49 + 24 + 46 =
  6. 6.30 + 78 + 31 + 82 =
  7. 7.42 + 75 + 15 + 19 =
  8. 8.46 + 79 + 19 + 48 =
  9. 9.48 + 49 + 80 + 67 =
  10. 10.69 + 76 + 12 + 78 =
  11. 11.23 + 29 + 70 + 13 =
  12. 12.28 + 60 + 26 + 60 =
  13. 13.35 + 34 + 39 + 39 =
  14. 14.31 + 75 + 63 + 63 =
  15. 15.46 + 51 + 54 + 22 =
  16. 16.30 + 88 + 79 + 45 =
  17. 17.27 + 72 + 29 + 78 =
  18. 18.35 + 29 + 32 + 18 =
  19. 19.64 + 56 + 41 + 50 =
  20. 20.51 + 36 + 24 + 31 =
  21. 21.20 + 52 + 54 + 15 =
  22. 22.87 + 29 + 54 + 75 =
  23. 23.31 + 66 + 71 + 40 =
  24. 24.13 + 51 + 87 + 47 =
  25. 25.78 + 59 + 39 + 64 =
  26. 26.40 + 19 + 11 + 89 =
  27. 27.53 + 73 + 63 + 28 =
  28. 28.53 + 89 + 31 + 71 =
  29. 29.79 + 53 + 35 + 77 =
  30. 30.79 + 34 + 64 + 29 =
  31. 31.13 + 17 + 73 + 29 =
  32. 32.26 + 87 + 86 + 25 =
  33. 33.36 + 27 + 76 + 30 =
  34. 34.76 + 72 + 34 + 58 =
  35. 35.15 + 29 + 75 + 52 =
  36. 36.21 + 30 + 54 + 64 =
  37. 37.24 + 30 + 40 + 34 =
  38. 38.41 + 47 + 25 + 18 =
  39. 39.27 + 70 + 53 + 17 =
  40. 40.24 + 70 + 86 + 55 =

Answer key

  1. 156
  2. 222
  3. 224
  4. 189
  5. 142
  6. 221
  7. 151
  8. 192
  9. 244
  10. 235
  11. 135
  12. 174
  13. 147
  14. 232
  15. 173
  16. 242
  17. 206
  18. 114
  19. 211
  20. 142
  21. 141
  22. 245
  23. 208
  24. 198
  25. 240
  26. 159
  27. 217
  28. 244
  29. 244
  30. 206
  31. 132
  32. 224
  33. 169
  34. 240
  35. 171
  36. 169
  37. 128
  38. 131
  39. 167
  40. 235

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