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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 340 · 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. 1.89 + 84 + 88 + 37 =
  2. 2.34 + 36 + 74 + 46 =
  3. 3.22 + 26 + 25 + 11 =
  4. 4.67 + 22 + 31 + 76 =
  5. 5.21 + 81 + 14 + 48 =
  6. 6.32 + 63 + 58 + 24 =
  7. 7.18 + 28 + 77 + 49 =
  8. 8.22 + 11 + 79 + 39 =
  9. 9.76 + 75 + 75 + 53 =
  10. 10.74 + 69 + 15 + 61 =
  11. 11.79 + 70 + 39 + 21 =
  12. 12.87 + 17 + 77 + 20 =
  13. 13.45 + 25 + 20 + 73 =
  14. 14.71 + 74 + 40 + 43 =
  15. 15.27 + 60 + 23 + 34 =
  16. 16.30 + 77 + 77 + 40 =
  17. 17.68 + 88 + 61 + 41 =
  18. 18.23 + 22 + 47 + 73 =
  19. 19.87 + 77 + 18 + 12 =
  20. 20.81 + 71 + 14 + 65 =
  21. 21.25 + 82 + 60 + 22 =
  22. 22.58 + 50 + 65 + 80 =
  23. 23.71 + 18 + 68 + 40 =
  24. 24.77 + 87 + 23 + 75 =
  25. 25.37 + 43 + 29 + 83 =
  26. 26.58 + 38 + 21 + 67 =
  27. 27.37 + 25 + 35 + 13 =
  28. 28.74 + 34 + 85 + 41 =
  29. 29.81 + 24 + 58 + 75 =
  30. 30.58 + 35 + 69 + 52 =
  31. 31.61 + 26 + 31 + 86 =
  32. 32.34 + 78 + 79 + 57 =
  33. 33.88 + 20 + 45 + 64 =
  34. 34.72 + 33 + 38 + 41 =
  35. 35.49 + 42 + 57 + 88 =
  36. 36.50 + 22 + 84 + 22 =
  37. 37.43 + 78 + 73 + 64 =
  38. 38.71 + 58 + 33 + 69 =
  39. 39.26 + 47 + 80 + 27 =
  40. 40.79 + 18 + 77 + 21 =

Answer key

  1. 298
  2. 190
  3. 84
  4. 196
  5. 164
  6. 177
  7. 172
  8. 151
  9. 279
  10. 219
  11. 209
  12. 201
  13. 163
  14. 228
  15. 144
  16. 224
  17. 258
  18. 165
  19. 194
  20. 231
  21. 189
  22. 253
  23. 197
  24. 262
  25. 192
  26. 184
  27. 110
  28. 234
  29. 238
  30. 214
  31. 204
  32. 248
  33. 217
  34. 184
  35. 236
  36. 178
  37. 258
  38. 231
  39. 180
  40. 195

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