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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 220 · 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. 1.34 + 54 + 37 + 19 =
  2. 2.74 + 23 + 49 + 75 =
  3. 3.49 + 22 + 78 + 11 =
  4. 4.12 + 22 + 88 + 56 =
  5. 5.77 + 59 + 46 + 18 =
  6. 6.49 + 83 + 25 + 39 =
  7. 7.60 + 74 + 73 + 69 =
  8. 8.35 + 84 + 81 + 14 =
  9. 9.70 + 36 + 13 + 61 =
  10. 10.30 + 88 + 13 + 36 =
  11. 11.69 + 38 + 79 + 43 =
  12. 12.86 + 87 + 20 + 79 =
  13. 13.19 + 21 + 37 + 21 =
  14. 14.20 + 87 + 84 + 79 =
  15. 15.45 + 14 + 60 + 72 =
  16. 16.48 + 68 + 68 + 66 =
  17. 17.61 + 44 + 48 + 82 =
  18. 18.34 + 25 + 26 + 29 =
  19. 19.23 + 79 + 27 + 56 =
  20. 20.50 + 14 + 11 + 81 =
  21. 21.50 + 31 + 15 + 50 =
  22. 22.76 + 74 + 43 + 84 =
  23. 23.69 + 20 + 82 + 68 =
  24. 24.34 + 56 + 56 + 83 =
  25. 25.12 + 59 + 43 + 78 =
  26. 26.24 + 72 + 12 + 61 =
  27. 27.23 + 63 + 74 + 13 =
  28. 28.32 + 76 + 40 + 50 =
  29. 29.31 + 15 + 16 + 16 =
  30. 30.80 + 33 + 52 + 86 =
  31. 31.36 + 61 + 28 + 66 =
  32. 32.86 + 66 + 53 + 11 =
  33. 33.20 + 54 + 37 + 79 =
  34. 34.84 + 45 + 65 + 36 =
  35. 35.57 + 37 + 76 + 77 =
  36. 36.59 + 15 + 47 + 25 =
  37. 37.29 + 64 + 51 + 22 =
  38. 38.76 + 86 + 82 + 64 =
  39. 39.42 + 39 + 44 + 22 =
  40. 40.27 + 16 + 36 + 20 =

Answer key

  1. 144
  2. 221
  3. 160
  4. 178
  5. 200
  6. 196
  7. 276
  8. 214
  9. 180
  10. 167
  11. 229
  12. 272
  13. 98
  14. 270
  15. 191
  16. 250
  17. 235
  18. 114
  19. 185
  20. 156
  21. 146
  22. 277
  23. 239
  24. 229
  25. 192
  26. 169
  27. 173
  28. 198
  29. 78
  30. 251
  31. 191
  32. 216
  33. 190
  34. 230
  35. 247
  36. 146
  37. 166
  38. 308
  39. 147
  40. 99

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