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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 590 · 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. 1.36 + 62 + 30 + 71 =
  2. 2.32 + 27 + 25 + 35 =
  3. 3.66 + 51 + 54 + 21 =
  4. 4.19 + 64 + 55 + 25 =
  5. 5.16 + 41 + 20 + 43 =
  6. 6.25 + 56 + 79 + 41 =
  7. 7.70 + 17 + 21 + 80 =
  8. 8.30 + 77 + 67 + 73 =
  9. 9.47 + 23 + 57 + 47 =
  10. 10.38 + 73 + 72 + 61 =
  11. 11.69 + 69 + 20 + 18 =
  12. 12.30 + 84 + 80 + 28 =
  13. 13.52 + 64 + 25 + 22 =
  14. 14.27 + 68 + 66 + 84 =
  15. 15.21 + 39 + 61 + 11 =
  16. 16.65 + 33 + 89 + 81 =
  17. 17.71 + 17 + 15 + 54 =
  18. 18.62 + 27 + 55 + 63 =
  19. 19.14 + 50 + 56 + 30 =
  20. 20.80 + 62 + 30 + 46 =
  21. 21.67 + 31 + 47 + 84 =
  22. 22.25 + 39 + 40 + 34 =
  23. 23.32 + 73 + 51 + 11 =
  24. 24.41 + 16 + 40 + 76 =
  25. 25.85 + 71 + 17 + 56 =
  26. 26.53 + 62 + 80 + 86 =
  27. 27.70 + 47 + 45 + 26 =
  28. 28.34 + 65 + 61 + 38 =
  29. 29.31 + 67 + 27 + 20 =
  30. 30.18 + 54 + 52 + 75 =
  31. 31.40 + 88 + 35 + 11 =
  32. 32.26 + 87 + 29 + 11 =
  33. 33.37 + 13 + 84 + 12 =
  34. 34.68 + 40 + 78 + 26 =
  35. 35.65 + 26 + 70 + 14 =
  36. 36.20 + 21 + 83 + 63 =
  37. 37.51 + 56 + 75 + 66 =
  38. 38.31 + 19 + 40 + 62 =
  39. 39.77 + 13 + 30 + 79 =
  40. 40.42 + 32 + 21 + 48 =

Answer key

  1. 199
  2. 119
  3. 192
  4. 163
  5. 120
  6. 201
  7. 188
  8. 247
  9. 174
  10. 244
  11. 176
  12. 222
  13. 163
  14. 245
  15. 132
  16. 268
  17. 157
  18. 207
  19. 150
  20. 218
  21. 229
  22. 138
  23. 167
  24. 173
  25. 229
  26. 281
  27. 188
  28. 198
  29. 145
  30. 199
  31. 174
  32. 153
  33. 146
  34. 212
  35. 175
  36. 187
  37. 248
  38. 152
  39. 199
  40. 143

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