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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 386 · 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. 1.28 + 69 + 51 + 50 =
  2. 2.36 + 41 + 60 + 81 =
  3. 3.76 + 37 + 23 + 64 =
  4. 4.52 + 35 + 72 + 37 =
  5. 5.88 + 85 + 46 + 20 =
  6. 6.57 + 29 + 67 + 56 =
  7. 7.41 + 73 + 61 + 41 =
  8. 8.63 + 68 + 14 + 83 =
  9. 9.35 + 14 + 45 + 53 =
  10. 10.26 + 16 + 77 + 82 =
  11. 11.43 + 25 + 77 + 51 =
  12. 12.31 + 71 + 73 + 83 =
  13. 13.86 + 12 + 33 + 30 =
  14. 14.16 + 75 + 84 + 34 =
  15. 15.49 + 41 + 27 + 59 =
  16. 16.25 + 67 + 11 + 55 =
  17. 17.65 + 67 + 14 + 48 =
  18. 18.30 + 68 + 15 + 53 =
  19. 19.20 + 69 + 68 + 35 =
  20. 20.11 + 64 + 34 + 26 =
  21. 21.43 + 17 + 50 + 85 =
  22. 22.53 + 81 + 79 + 65 =
  23. 23.39 + 39 + 37 + 54 =
  24. 24.70 + 80 + 13 + 24 =
  25. 25.49 + 69 + 87 + 19 =
  26. 26.17 + 57 + 72 + 55 =
  27. 27.53 + 34 + 49 + 13 =
  28. 28.52 + 75 + 81 + 80 =
  29. 29.65 + 23 + 46 + 76 =
  30. 30.22 + 40 + 86 + 37 =
  31. 31.19 + 68 + 59 + 74 =
  32. 32.85 + 30 + 48 + 27 =
  33. 33.18 + 87 + 31 + 57 =
  34. 34.15 + 23 + 57 + 34 =
  35. 35.79 + 71 + 28 + 80 =
  36. 36.25 + 88 + 76 + 30 =
  37. 37.17 + 59 + 73 + 13 =
  38. 38.59 + 52 + 65 + 64 =
  39. 39.77 + 27 + 67 + 11 =
  40. 40.73 + 12 + 88 + 14 =

Answer key

  1. 198
  2. 218
  3. 200
  4. 196
  5. 239
  6. 209
  7. 216
  8. 228
  9. 147
  10. 201
  11. 196
  12. 258
  13. 161
  14. 209
  15. 176
  16. 158
  17. 194
  18. 166
  19. 192
  20. 135
  21. 195
  22. 278
  23. 169
  24. 187
  25. 224
  26. 201
  27. 149
  28. 288
  29. 210
  30. 185
  31. 220
  32. 190
  33. 193
  34. 129
  35. 258
  36. 219
  37. 162
  38. 240
  39. 182
  40. 187

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