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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 312 · 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. 1.59 + 74 + 13 + 76 =
  2. 2.22 + 19 + 11 + 12 =
  3. 3.43 + 60 + 20 + 27 =
  4. 4.82 + 76 + 78 + 58 =
  5. 5.70 + 43 + 52 + 33 =
  6. 6.15 + 76 + 64 + 65 =
  7. 7.20 + 36 + 23 + 56 =
  8. 8.21 + 48 + 30 + 22 =
  9. 9.34 + 33 + 30 + 43 =
  10. 10.64 + 53 + 74 + 55 =
  11. 11.42 + 65 + 13 + 55 =
  12. 12.25 + 33 + 39 + 58 =
  13. 13.80 + 36 + 48 + 11 =
  14. 14.43 + 60 + 23 + 27 =
  15. 15.32 + 14 + 83 + 70 =
  16. 16.25 + 51 + 24 + 40 =
  17. 17.81 + 57 + 16 + 29 =
  18. 18.74 + 89 + 16 + 59 =
  19. 19.57 + 69 + 22 + 75 =
  20. 20.42 + 52 + 79 + 17 =
  21. 21.44 + 85 + 58 + 79 =
  22. 22.26 + 84 + 41 + 30 =
  23. 23.72 + 11 + 58 + 54 =
  24. 24.57 + 17 + 50 + 32 =
  25. 25.13 + 60 + 18 + 57 =
  26. 26.53 + 11 + 53 + 42 =
  27. 27.30 + 54 + 47 + 54 =
  28. 28.13 + 50 + 55 + 40 =
  29. 29.74 + 36 + 85 + 86 =
  30. 30.30 + 26 + 24 + 26 =
  31. 31.19 + 52 + 21 + 25 =
  32. 32.89 + 86 + 47 + 29 =
  33. 33.27 + 19 + 30 + 36 =
  34. 34.56 + 67 + 28 + 69 =
  35. 35.28 + 55 + 34 + 54 =
  36. 36.25 + 33 + 79 + 63 =
  37. 37.33 + 62 + 38 + 86 =
  38. 38.28 + 83 + 38 + 57 =
  39. 39.21 + 79 + 26 + 55 =
  40. 40.31 + 72 + 15 + 62 =

Answer key

  1. 222
  2. 64
  3. 150
  4. 294
  5. 198
  6. 220
  7. 135
  8. 121
  9. 140
  10. 246
  11. 175
  12. 155
  13. 175
  14. 153
  15. 199
  16. 140
  17. 183
  18. 238
  19. 223
  20. 190
  21. 266
  22. 181
  23. 195
  24. 156
  25. 148
  26. 159
  27. 185
  28. 158
  29. 281
  30. 106
  31. 117
  32. 251
  33. 112
  34. 220
  35. 171
  36. 200
  37. 219
  38. 206
  39. 181
  40. 180

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