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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 179 · 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. 1.88 + 60 + 43 + 40 =
  2. 2.54 + 19 + 88 + 12 =
  3. 3.70 + 67 + 30 + 26 =
  4. 4.80 + 45 + 58 + 33 =
  5. 5.15 + 83 + 23 + 63 =
  6. 6.21 + 23 + 85 + 86 =
  7. 7.84 + 19 + 87 + 41 =
  8. 8.89 + 59 + 43 + 21 =
  9. 9.20 + 18 + 40 + 16 =
  10. 10.15 + 19 + 12 + 76 =
  11. 11.57 + 22 + 25 + 59 =
  12. 12.26 + 26 + 81 + 52 =
  13. 13.89 + 19 + 13 + 32 =
  14. 14.29 + 13 + 33 + 67 =
  15. 15.54 + 44 + 23 + 78 =
  16. 16.35 + 12 + 53 + 33 =
  17. 17.15 + 46 + 67 + 49 =
  18. 18.34 + 29 + 67 + 42 =
  19. 19.19 + 56 + 89 + 64 =
  20. 20.77 + 47 + 52 + 18 =
  21. 21.40 + 25 + 33 + 62 =
  22. 22.60 + 21 + 15 + 50 =
  23. 23.67 + 73 + 15 + 38 =
  24. 24.33 + 55 + 68 + 82 =
  25. 25.55 + 28 + 64 + 24 =
  26. 26.79 + 68 + 29 + 87 =
  27. 27.21 + 53 + 65 + 19 =
  28. 28.22 + 79 + 15 + 80 =
  29. 29.73 + 64 + 87 + 77 =
  30. 30.74 + 37 + 21 + 31 =
  31. 31.85 + 24 + 72 + 52 =
  32. 32.22 + 73 + 32 + 23 =
  33. 33.65 + 14 + 64 + 19 =
  34. 34.65 + 49 + 87 + 48 =
  35. 35.32 + 80 + 17 + 85 =
  36. 36.25 + 11 + 12 + 79 =
  37. 37.33 + 21 + 22 + 48 =
  38. 38.74 + 43 + 39 + 85 =
  39. 39.82 + 87 + 16 + 88 =
  40. 40.73 + 74 + 63 + 25 =

Answer key

  1. 231
  2. 173
  3. 193
  4. 216
  5. 184
  6. 215
  7. 231
  8. 212
  9. 94
  10. 122
  11. 163
  12. 185
  13. 153
  14. 142
  15. 199
  16. 133
  17. 177
  18. 172
  19. 228
  20. 194
  21. 160
  22. 146
  23. 193
  24. 238
  25. 171
  26. 263
  27. 158
  28. 196
  29. 301
  30. 163
  31. 233
  32. 150
  33. 162
  34. 249
  35. 214
  36. 127
  37. 124
  38. 241
  39. 273
  40. 235

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