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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 115 · 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. 1.49 + 71 + 42 + 27 =
  2. 2.46 + 82 + 73 + 16 =
  3. 3.36 + 60 + 86 + 81 =
  4. 4.43 + 61 + 36 + 67 =
  5. 5.52 + 64 + 55 + 26 =
  6. 6.29 + 37 + 40 + 63 =
  7. 7.28 + 14 + 30 + 58 =
  8. 8.11 + 77 + 14 + 79 =
  9. 9.88 + 11 + 77 + 37 =
  10. 10.89 + 38 + 64 + 39 =
  11. 11.39 + 16 + 18 + 47 =
  12. 12.38 + 33 + 43 + 23 =
  13. 13.63 + 24 + 68 + 34 =
  14. 14.64 + 34 + 56 + 18 =
  15. 15.49 + 41 + 14 + 44 =
  16. 16.45 + 56 + 84 + 63 =
  17. 17.36 + 47 + 39 + 67 =
  18. 18.66 + 54 + 19 + 65 =
  19. 19.48 + 58 + 67 + 29 =
  20. 20.51 + 71 + 69 + 61 =
  21. 21.48 + 52 + 76 + 82 =
  22. 22.16 + 26 + 80 + 23 =
  23. 23.12 + 57 + 76 + 74 =
  24. 24.59 + 37 + 25 + 80 =
  25. 25.82 + 70 + 29 + 22 =
  26. 26.48 + 77 + 57 + 81 =
  27. 27.74 + 64 + 14 + 49 =
  28. 28.81 + 72 + 67 + 28 =
  29. 29.11 + 87 + 25 + 86 =
  30. 30.38 + 62 + 36 + 83 =
  31. 31.29 + 75 + 37 + 65 =
  32. 32.75 + 15 + 25 + 41 =
  33. 33.84 + 21 + 17 + 69 =
  34. 34.57 + 82 + 33 + 68 =
  35. 35.14 + 37 + 34 + 21 =
  36. 36.84 + 60 + 70 + 89 =
  37. 37.59 + 31 + 29 + 17 =
  38. 38.76 + 70 + 61 + 15 =
  39. 39.52 + 32 + 12 + 33 =
  40. 40.54 + 36 + 50 + 70 =

Answer key

  1. 189
  2. 217
  3. 263
  4. 207
  5. 197
  6. 169
  7. 130
  8. 181
  9. 213
  10. 230
  11. 120
  12. 137
  13. 189
  14. 172
  15. 148
  16. 248
  17. 189
  18. 204
  19. 202
  20. 252
  21. 258
  22. 145
  23. 219
  24. 201
  25. 203
  26. 263
  27. 201
  28. 248
  29. 209
  30. 219
  31. 206
  32. 156
  33. 191
  34. 240
  35. 106
  36. 303
  37. 136
  38. 222
  39. 129
  40. 210

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