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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 88 · 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. 1.46 + 71 + 51 + 34 =
  2. 2.55 + 43 + 78 + 50 =
  3. 3.55 + 79 + 16 + 22 =
  4. 4.27 + 12 + 71 + 59 =
  5. 5.89 + 24 + 84 + 57 =
  6. 6.58 + 29 + 86 + 72 =
  7. 7.60 + 35 + 21 + 56 =
  8. 8.16 + 58 + 15 + 42 =
  9. 9.60 + 34 + 73 + 82 =
  10. 10.74 + 25 + 63 + 18 =
  11. 11.48 + 61 + 85 + 32 =
  12. 12.38 + 14 + 53 + 39 =
  13. 13.12 + 44 + 61 + 83 =
  14. 14.21 + 11 + 28 + 34 =
  15. 15.84 + 87 + 13 + 16 =
  16. 16.54 + 76 + 24 + 63 =
  17. 17.39 + 28 + 13 + 13 =
  18. 18.11 + 19 + 50 + 52 =
  19. 19.68 + 32 + 70 + 22 =
  20. 20.34 + 19 + 20 + 18 =
  21. 21.53 + 56 + 30 + 85 =
  22. 22.32 + 68 + 72 + 52 =
  23. 23.46 + 49 + 39 + 70 =
  24. 24.21 + 56 + 83 + 43 =
  25. 25.50 + 58 + 30 + 89 =
  26. 26.14 + 84 + 77 + 68 =
  27. 27.67 + 32 + 12 + 22 =
  28. 28.83 + 36 + 29 + 43 =
  29. 29.32 + 23 + 42 + 38 =
  30. 30.31 + 70 + 52 + 56 =
  31. 31.17 + 55 + 70 + 49 =
  32. 32.49 + 57 + 61 + 15 =
  33. 33.75 + 13 + 80 + 58 =
  34. 34.59 + 66 + 73 + 55 =
  35. 35.31 + 57 + 32 + 21 =
  36. 36.26 + 59 + 36 + 28 =
  37. 37.58 + 16 + 11 + 18 =
  38. 38.18 + 81 + 85 + 15 =
  39. 39.52 + 22 + 38 + 66 =
  40. 40.45 + 76 + 14 + 21 =

Answer key

  1. 202
  2. 226
  3. 172
  4. 169
  5. 254
  6. 245
  7. 172
  8. 131
  9. 249
  10. 180
  11. 226
  12. 144
  13. 200
  14. 94
  15. 200
  16. 217
  17. 93
  18. 132
  19. 192
  20. 91
  21. 224
  22. 224
  23. 204
  24. 203
  25. 227
  26. 243
  27. 133
  28. 191
  29. 135
  30. 209
  31. 191
  32. 182
  33. 226
  34. 253
  35. 141
  36. 149
  37. 103
  38. 199
  39. 178
  40. 156

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