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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 764 · 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. 1.38 + 78 + 11 + 87 =
  2. 2.81 + 78 + 74 + 30 =
  3. 3.26 + 81 + 25 + 84 =
  4. 4.45 + 12 + 16 + 28 =
  5. 5.49 + 48 + 53 + 32 =
  6. 6.75 + 15 + 13 + 47 =
  7. 7.79 + 58 + 52 + 57 =
  8. 8.79 + 87 + 41 + 46 =
  9. 9.15 + 83 + 40 + 59 =
  10. 10.62 + 18 + 74 + 30 =
  11. 11.50 + 51 + 30 + 28 =
  12. 12.60 + 19 + 59 + 62 =
  13. 13.54 + 27 + 11 + 81 =
  14. 14.49 + 50 + 59 + 77 =
  15. 15.20 + 73 + 72 + 31 =
  16. 16.29 + 63 + 62 + 63 =
  17. 17.89 + 86 + 68 + 80 =
  18. 18.73 + 58 + 14 + 52 =
  19. 19.56 + 43 + 29 + 33 =
  20. 20.67 + 76 + 13 + 76 =
  21. 21.22 + 14 + 12 + 51 =
  22. 22.78 + 88 + 51 + 26 =
  23. 23.58 + 52 + 39 + 36 =
  24. 24.69 + 41 + 20 + 54 =
  25. 25.31 + 75 + 26 + 32 =
  26. 26.16 + 21 + 35 + 66 =
  27. 27.48 + 31 + 52 + 12 =
  28. 28.40 + 18 + 37 + 33 =
  29. 29.86 + 34 + 60 + 42 =
  30. 30.47 + 67 + 85 + 82 =
  31. 31.37 + 30 + 54 + 54 =
  32. 32.65 + 25 + 23 + 65 =
  33. 33.39 + 13 + 74 + 76 =
  34. 34.68 + 82 + 82 + 80 =
  35. 35.58 + 27 + 42 + 89 =
  36. 36.76 + 41 + 18 + 18 =
  37. 37.56 + 28 + 84 + 20 =
  38. 38.38 + 34 + 20 + 75 =
  39. 39.29 + 56 + 24 + 18 =
  40. 40.32 + 75 + 18 + 57 =

Answer key

  1. 214
  2. 263
  3. 216
  4. 101
  5. 182
  6. 150
  7. 246
  8. 253
  9. 197
  10. 184
  11. 159
  12. 200
  13. 173
  14. 235
  15. 196
  16. 217
  17. 323
  18. 197
  19. 161
  20. 232
  21. 99
  22. 243
  23. 185
  24. 184
  25. 164
  26. 138
  27. 143
  28. 128
  29. 222
  30. 281
  31. 175
  32. 178
  33. 202
  34. 312
  35. 216
  36. 153
  37. 188
  38. 167
  39. 127
  40. 182

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