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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 382 · 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. 1.56 + 84 + 74 + 87 =
  2. 2.51 + 55 + 80 + 33 =
  3. 3.22 + 65 + 33 + 55 =
  4. 4.17 + 54 + 55 + 71 =
  5. 5.39 + 19 + 80 + 32 =
  6. 6.66 + 54 + 35 + 62 =
  7. 7.11 + 79 + 84 + 52 =
  8. 8.72 + 68 + 13 + 82 =
  9. 9.30 + 25 + 32 + 51 =
  10. 10.48 + 34 + 74 + 24 =
  11. 11.12 + 37 + 60 + 87 =
  12. 12.72 + 20 + 22 + 73 =
  13. 13.44 + 55 + 66 + 88 =
  14. 14.23 + 82 + 83 + 49 =
  15. 15.51 + 36 + 46 + 19 =
  16. 16.68 + 88 + 30 + 11 =
  17. 17.42 + 49 + 30 + 24 =
  18. 18.56 + 21 + 30 + 53 =
  19. 19.26 + 56 + 17 + 32 =
  20. 20.11 + 39 + 72 + 34 =
  21. 21.57 + 22 + 14 + 12 =
  22. 22.75 + 16 + 21 + 22 =
  23. 23.52 + 52 + 68 + 87 =
  24. 24.18 + 21 + 86 + 21 =
  25. 25.47 + 11 + 30 + 43 =
  26. 26.37 + 13 + 26 + 39 =
  27. 27.66 + 66 + 73 + 67 =
  28. 28.77 + 71 + 61 + 28 =
  29. 29.82 + 53 + 46 + 47 =
  30. 30.20 + 18 + 40 + 26 =
  31. 31.32 + 57 + 14 + 75 =
  32. 32.31 + 43 + 66 + 82 =
  33. 33.56 + 30 + 59 + 24 =
  34. 34.19 + 86 + 57 + 22 =
  35. 35.23 + 25 + 22 + 40 =
  36. 36.26 + 29 + 26 + 38 =
  37. 37.67 + 41 + 28 + 31 =
  38. 38.15 + 74 + 22 + 15 =
  39. 39.15 + 84 + 22 + 53 =
  40. 40.20 + 30 + 89 + 53 =

Answer key

  1. 301
  2. 219
  3. 175
  4. 197
  5. 170
  6. 217
  7. 226
  8. 235
  9. 138
  10. 180
  11. 196
  12. 187
  13. 253
  14. 237
  15. 152
  16. 197
  17. 145
  18. 160
  19. 131
  20. 156
  21. 105
  22. 134
  23. 259
  24. 146
  25. 131
  26. 115
  27. 272
  28. 237
  29. 228
  30. 104
  31. 178
  32. 222
  33. 169
  34. 184
  35. 110
  36. 119
  37. 167
  38. 126
  39. 174
  40. 192

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