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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 184 · 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. 1.79 + 61 + 12 + 24 =
  2. 2.53 + 72 + 28 + 80 =
  3. 3.31 + 33 + 64 + 62 =
  4. 4.31 + 13 + 68 + 68 =
  5. 5.29 + 15 + 80 + 19 =
  6. 6.29 + 18 + 32 + 77 =
  7. 7.64 + 62 + 89 + 17 =
  8. 8.23 + 53 + 43 + 57 =
  9. 9.56 + 54 + 22 + 33 =
  10. 10.20 + 84 + 58 + 32 =
  11. 11.45 + 37 + 43 + 37 =
  12. 12.66 + 34 + 16 + 78 =
  13. 13.77 + 42 + 34 + 77 =
  14. 14.39 + 56 + 19 + 81 =
  15. 15.78 + 56 + 47 + 45 =
  16. 16.70 + 36 + 22 + 19 =
  17. 17.41 + 51 + 47 + 54 =
  18. 18.38 + 31 + 47 + 17 =
  19. 19.29 + 19 + 21 + 58 =
  20. 20.59 + 47 + 30 + 34 =
  21. 21.52 + 48 + 27 + 23 =
  22. 22.51 + 79 + 79 + 70 =
  23. 23.79 + 20 + 18 + 48 =
  24. 24.47 + 39 + 53 + 81 =
  25. 25.61 + 54 + 81 + 32 =
  26. 26.87 + 57 + 35 + 84 =
  27. 27.54 + 33 + 63 + 33 =
  28. 28.88 + 68 + 43 + 75 =
  29. 29.81 + 49 + 35 + 38 =
  30. 30.86 + 51 + 40 + 39 =
  31. 31.71 + 27 + 41 + 35 =
  32. 32.65 + 49 + 50 + 87 =
  33. 33.65 + 22 + 42 + 51 =
  34. 34.13 + 53 + 14 + 21 =
  35. 35.56 + 85 + 29 + 48 =
  36. 36.68 + 45 + 47 + 33 =
  37. 37.54 + 28 + 15 + 53 =
  38. 38.75 + 46 + 35 + 64 =
  39. 39.84 + 50 + 16 + 29 =
  40. 40.34 + 77 + 60 + 35 =

Answer key

  1. 176
  2. 233
  3. 190
  4. 180
  5. 143
  6. 156
  7. 232
  8. 176
  9. 165
  10. 194
  11. 162
  12. 194
  13. 230
  14. 195
  15. 226
  16. 147
  17. 193
  18. 133
  19. 127
  20. 170
  21. 150
  22. 279
  23. 165
  24. 220
  25. 228
  26. 263
  27. 183
  28. 274
  29. 203
  30. 216
  31. 174
  32. 251
  33. 180
  34. 101
  35. 218
  36. 193
  37. 150
  38. 220
  39. 179
  40. 206

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