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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 37 · 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. 1.88 + 72 + 16 + 22 =
  2. 2.27 + 11 + 62 + 37 =
  3. 3.14 + 42 + 22 + 47 =
  4. 4.75 + 73 + 84 + 12 =
  5. 5.47 + 16 + 40 + 89 =
  6. 6.61 + 26 + 66 + 30 =
  7. 7.22 + 24 + 67 + 85 =
  8. 8.40 + 77 + 82 + 15 =
  9. 9.71 + 22 + 15 + 47 =
  10. 10.41 + 13 + 21 + 18 =
  11. 11.42 + 58 + 78 + 46 =
  12. 12.36 + 48 + 14 + 26 =
  13. 13.16 + 34 + 43 + 12 =
  14. 14.13 + 68 + 72 + 21 =
  15. 15.16 + 12 + 64 + 11 =
  16. 16.18 + 22 + 59 + 74 =
  17. 17.71 + 68 + 20 + 46 =
  18. 18.65 + 47 + 61 + 70 =
  19. 19.32 + 87 + 36 + 32 =
  20. 20.86 + 48 + 14 + 19 =
  21. 21.72 + 40 + 58 + 71 =
  22. 22.33 + 11 + 89 + 73 =
  23. 23.63 + 15 + 45 + 70 =
  24. 24.23 + 34 + 53 + 19 =
  25. 25.13 + 20 + 63 + 55 =
  26. 26.68 + 89 + 21 + 27 =
  27. 27.17 + 65 + 35 + 18 =
  28. 28.71 + 13 + 57 + 74 =
  29. 29.18 + 48 + 68 + 82 =
  30. 30.27 + 21 + 87 + 58 =
  31. 31.24 + 80 + 55 + 51 =
  32. 32.69 + 70 + 82 + 17 =
  33. 33.67 + 65 + 64 + 68 =
  34. 34.38 + 11 + 41 + 58 =
  35. 35.61 + 69 + 69 + 14 =
  36. 36.73 + 79 + 17 + 50 =
  37. 37.69 + 44 + 70 + 28 =
  38. 38.19 + 70 + 77 + 14 =
  39. 39.42 + 58 + 26 + 84 =
  40. 40.77 + 76 + 39 + 55 =

Answer key

  1. 198
  2. 137
  3. 125
  4. 244
  5. 192
  6. 183
  7. 198
  8. 214
  9. 155
  10. 93
  11. 224
  12. 124
  13. 105
  14. 174
  15. 103
  16. 173
  17. 205
  18. 243
  19. 187
  20. 167
  21. 241
  22. 206
  23. 193
  24. 129
  25. 151
  26. 205
  27. 135
  28. 215
  29. 216
  30. 193
  31. 210
  32. 238
  33. 264
  34. 148
  35. 213
  36. 219
  37. 211
  38. 180
  39. 210
  40. 247

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