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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 152 · 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. 1.84 + 81 + 62 + 87 =
  2. 2.74 + 64 + 57 + 30 =
  3. 3.56 + 61 + 49 + 47 =
  4. 4.40 + 30 + 35 + 64 =
  5. 5.45 + 61 + 80 + 42 =
  6. 6.45 + 73 + 80 + 11 =
  7. 7.48 + 42 + 27 + 71 =
  8. 8.23 + 16 + 69 + 47 =
  9. 9.68 + 15 + 85 + 35 =
  10. 10.88 + 20 + 69 + 63 =
  11. 11.72 + 46 + 42 + 47 =
  12. 12.21 + 54 + 54 + 75 =
  13. 13.26 + 57 + 11 + 45 =
  14. 14.86 + 26 + 36 + 20 =
  15. 15.63 + 65 + 11 + 30 =
  16. 16.76 + 22 + 84 + 65 =
  17. 17.13 + 64 + 11 + 70 =
  18. 18.12 + 27 + 66 + 67 =
  19. 19.72 + 30 + 51 + 48 =
  20. 20.58 + 83 + 23 + 41 =
  21. 21.62 + 56 + 58 + 54 =
  22. 22.23 + 31 + 89 + 81 =
  23. 23.79 + 71 + 64 + 73 =
  24. 24.26 + 32 + 14 + 49 =
  25. 25.80 + 31 + 11 + 16 =
  26. 26.52 + 22 + 77 + 84 =
  27. 27.82 + 33 + 11 + 25 =
  28. 28.23 + 56 + 21 + 84 =
  29. 29.72 + 62 + 31 + 12 =
  30. 30.17 + 72 + 20 + 20 =
  31. 31.14 + 17 + 74 + 84 =
  32. 32.16 + 29 + 32 + 87 =
  33. 33.33 + 32 + 33 + 33 =
  34. 34.11 + 38 + 59 + 56 =
  35. 35.72 + 73 + 18 + 31 =
  36. 36.11 + 32 + 80 + 59 =
  37. 37.32 + 56 + 34 + 83 =
  38. 38.45 + 60 + 57 + 68 =
  39. 39.79 + 81 + 48 + 86 =
  40. 40.36 + 88 + 22 + 16 =

Answer key

  1. 314
  2. 225
  3. 213
  4. 169
  5. 228
  6. 209
  7. 188
  8. 155
  9. 203
  10. 240
  11. 207
  12. 204
  13. 139
  14. 168
  15. 169
  16. 247
  17. 158
  18. 172
  19. 201
  20. 205
  21. 230
  22. 224
  23. 287
  24. 121
  25. 138
  26. 235
  27. 151
  28. 184
  29. 177
  30. 129
  31. 189
  32. 164
  33. 131
  34. 164
  35. 194
  36. 182
  37. 205
  38. 230
  39. 294
  40. 162

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