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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 122 · 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. 1.68 + 59 + 22 + 54 =
  2. 2.26 + 16 + 16 + 50 =
  3. 3.37 + 35 + 39 + 38 =
  4. 4.27 + 43 + 48 + 80 =
  5. 5.80 + 66 + 66 + 71 =
  6. 6.86 + 35 + 15 + 62 =
  7. 7.51 + 27 + 43 + 55 =
  8. 8.28 + 85 + 38 + 77 =
  9. 9.34 + 38 + 87 + 19 =
  10. 10.81 + 20 + 35 + 89 =
  11. 11.67 + 34 + 82 + 72 =
  12. 12.43 + 46 + 30 + 19 =
  13. 13.32 + 66 + 74 + 82 =
  14. 14.62 + 24 + 18 + 23 =
  15. 15.13 + 21 + 45 + 84 =
  16. 16.43 + 48 + 54 + 16 =
  17. 17.32 + 20 + 89 + 18 =
  18. 18.71 + 45 + 66 + 65 =
  19. 19.53 + 54 + 43 + 83 =
  20. 20.14 + 76 + 19 + 49 =
  21. 21.53 + 46 + 35 + 56 =
  22. 22.11 + 50 + 52 + 32 =
  23. 23.48 + 70 + 79 + 31 =
  24. 24.35 + 69 + 15 + 24 =
  25. 25.86 + 35 + 45 + 35 =
  26. 26.85 + 67 + 38 + 82 =
  27. 27.81 + 60 + 46 + 84 =
  28. 28.53 + 67 + 80 + 62 =
  29. 29.38 + 15 + 13 + 48 =
  30. 30.47 + 15 + 17 + 44 =
  31. 31.60 + 15 + 29 + 73 =
  32. 32.39 + 43 + 17 + 63 =
  33. 33.42 + 42 + 75 + 55 =
  34. 34.32 + 22 + 52 + 31 =
  35. 35.65 + 37 + 18 + 69 =
  36. 36.62 + 49 + 82 + 64 =
  37. 37.83 + 77 + 31 + 58 =
  38. 38.14 + 14 + 17 + 76 =
  39. 39.11 + 17 + 17 + 29 =
  40. 40.40 + 56 + 36 + 15 =

Answer key

  1. 203
  2. 108
  3. 149
  4. 198
  5. 283
  6. 198
  7. 176
  8. 228
  9. 178
  10. 225
  11. 255
  12. 138
  13. 254
  14. 127
  15. 163
  16. 161
  17. 159
  18. 247
  19. 233
  20. 158
  21. 190
  22. 145
  23. 228
  24. 143
  25. 201
  26. 272
  27. 271
  28. 262
  29. 114
  30. 123
  31. 177
  32. 162
  33. 214
  34. 137
  35. 189
  36. 257
  37. 249
  38. 121
  39. 74
  40. 147

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