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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 361 · 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. 1.19 + 84 + 31 + 54 =
  2. 2.30 + 78 + 11 + 52 =
  3. 3.78 + 69 + 13 + 59 =
  4. 4.36 + 58 + 35 + 30 =
  5. 5.25 + 77 + 82 + 24 =
  6. 6.19 + 19 + 64 + 61 =
  7. 7.28 + 36 + 36 + 22 =
  8. 8.58 + 18 + 33 + 23 =
  9. 9.18 + 25 + 43 + 63 =
  10. 10.53 + 60 + 14 + 21 =
  11. 11.63 + 64 + 59 + 26 =
  12. 12.77 + 67 + 22 + 22 =
  13. 13.33 + 12 + 59 + 81 =
  14. 14.48 + 62 + 72 + 25 =
  15. 15.15 + 16 + 61 + 80 =
  16. 16.22 + 41 + 83 + 30 =
  17. 17.82 + 82 + 72 + 87 =
  18. 18.14 + 66 + 39 + 38 =
  19. 19.54 + 72 + 81 + 60 =
  20. 20.49 + 53 + 48 + 34 =
  21. 21.80 + 79 + 59 + 33 =
  22. 22.56 + 38 + 85 + 31 =
  23. 23.31 + 41 + 17 + 37 =
  24. 24.44 + 33 + 53 + 70 =
  25. 25.83 + 26 + 17 + 57 =
  26. 26.23 + 64 + 85 + 12 =
  27. 27.50 + 83 + 89 + 17 =
  28. 28.13 + 55 + 12 + 68 =
  29. 29.31 + 69 + 83 + 13 =
  30. 30.21 + 17 + 23 + 44 =
  31. 31.15 + 57 + 31 + 22 =
  32. 32.79 + 29 + 28 + 72 =
  33. 33.58 + 56 + 61 + 49 =
  34. 34.79 + 74 + 31 + 79 =
  35. 35.69 + 28 + 77 + 44 =
  36. 36.49 + 13 + 27 + 44 =
  37. 37.40 + 54 + 50 + 25 =
  38. 38.23 + 26 + 39 + 11 =
  39. 39.85 + 46 + 48 + 74 =
  40. 40.69 + 52 + 41 + 60 =

Answer key

  1. 188
  2. 171
  3. 219
  4. 159
  5. 208
  6. 163
  7. 122
  8. 132
  9. 149
  10. 148
  11. 212
  12. 188
  13. 185
  14. 207
  15. 172
  16. 176
  17. 323
  18. 157
  19. 267
  20. 184
  21. 251
  22. 210
  23. 126
  24. 200
  25. 183
  26. 184
  27. 239
  28. 148
  29. 196
  30. 105
  31. 125
  32. 208
  33. 224
  34. 263
  35. 218
  36. 133
  37. 169
  38. 99
  39. 253
  40. 222

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