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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 32 · 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. 1.86 + 65 + 86 + 47 =
  2. 2.87 + 89 + 83 + 70 =
  3. 3.27 + 33 + 38 + 52 =
  4. 4.56 + 35 + 15 + 78 =
  5. 5.25 + 62 + 86 + 22 =
  6. 6.29 + 87 + 21 + 34 =
  7. 7.15 + 38 + 32 + 29 =
  8. 8.73 + 34 + 33 + 89 =
  9. 9.51 + 52 + 76 + 55 =
  10. 10.47 + 77 + 43 + 54 =
  11. 11.48 + 67 + 30 + 23 =
  12. 12.69 + 32 + 21 + 54 =
  13. 13.61 + 43 + 15 + 43 =
  14. 14.78 + 82 + 45 + 34 =
  15. 15.28 + 36 + 79 + 24 =
  16. 16.58 + 13 + 27 + 43 =
  17. 17.76 + 75 + 88 + 47 =
  18. 18.60 + 25 + 13 + 12 =
  19. 19.74 + 42 + 74 + 24 =
  20. 20.47 + 30 + 34 + 49 =
  21. 21.55 + 16 + 27 + 23 =
  22. 22.13 + 14 + 61 + 47 =
  23. 23.58 + 13 + 31 + 30 =
  24. 24.24 + 24 + 15 + 54 =
  25. 25.36 + 70 + 49 + 42 =
  26. 26.12 + 15 + 38 + 48 =
  27. 27.27 + 14 + 18 + 85 =
  28. 28.61 + 28 + 71 + 86 =
  29. 29.53 + 61 + 40 + 37 =
  30. 30.58 + 84 + 24 + 45 =
  31. 31.36 + 36 + 40 + 24 =
  32. 32.66 + 24 + 28 + 65 =
  33. 33.44 + 26 + 28 + 27 =
  34. 34.43 + 64 + 53 + 28 =
  35. 35.50 + 58 + 82 + 22 =
  36. 36.50 + 20 + 60 + 77 =
  37. 37.19 + 69 + 52 + 61 =
  38. 38.30 + 57 + 80 + 84 =
  39. 39.35 + 43 + 13 + 49 =
  40. 40.87 + 18 + 11 + 46 =

Answer key

  1. 284
  2. 329
  3. 150
  4. 184
  5. 195
  6. 171
  7. 114
  8. 229
  9. 234
  10. 221
  11. 168
  12. 176
  13. 162
  14. 239
  15. 167
  16. 141
  17. 286
  18. 110
  19. 214
  20. 160
  21. 121
  22. 135
  23. 132
  24. 117
  25. 197
  26. 113
  27. 144
  28. 246
  29. 191
  30. 211
  31. 136
  32. 183
  33. 125
  34. 188
  35. 212
  36. 207
  37. 201
  38. 251
  39. 140
  40. 162

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