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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 84 · 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. 1.44 + 12 + 63 + 24 =
  2. 2.27 + 84 + 89 + 64 =
  3. 3.13 + 33 + 75 + 38 =
  4. 4.82 + 74 + 63 + 32 =
  5. 5.67 + 36 + 74 + 34 =
  6. 6.18 + 69 + 19 + 85 =
  7. 7.15 + 34 + 64 + 72 =
  8. 8.77 + 45 + 56 + 32 =
  9. 9.40 + 11 + 89 + 41 =
  10. 10.73 + 29 + 61 + 17 =
  11. 11.24 + 45 + 83 + 13 =
  12. 12.64 + 76 + 49 + 57 =
  13. 13.23 + 26 + 58 + 34 =
  14. 14.82 + 17 + 87 + 21 =
  15. 15.65 + 15 + 48 + 69 =
  16. 16.19 + 33 + 16 + 59 =
  17. 17.22 + 71 + 77 + 50 =
  18. 18.85 + 28 + 83 + 73 =
  19. 19.13 + 17 + 88 + 89 =
  20. 20.14 + 14 + 74 + 78 =
  21. 21.30 + 71 + 71 + 75 =
  22. 22.15 + 45 + 80 + 42 =
  23. 23.14 + 57 + 79 + 70 =
  24. 24.86 + 26 + 22 + 30 =
  25. 25.37 + 20 + 75 + 31 =
  26. 26.79 + 75 + 74 + 29 =
  27. 27.59 + 32 + 41 + 85 =
  28. 28.17 + 54 + 73 + 78 =
  29. 29.35 + 74 + 49 + 17 =
  30. 30.36 + 17 + 24 + 27 =
  31. 31.22 + 63 + 31 + 44 =
  32. 32.63 + 44 + 36 + 11 =
  33. 33.33 + 56 + 18 + 56 =
  34. 34.38 + 72 + 36 + 42 =
  35. 35.71 + 50 + 37 + 11 =
  36. 36.82 + 32 + 13 + 78 =
  37. 37.42 + 73 + 15 + 78 =
  38. 38.22 + 70 + 28 + 55 =
  39. 39.33 + 61 + 16 + 46 =
  40. 40.17 + 61 + 14 + 82 =

Answer key

  1. 143
  2. 264
  3. 159
  4. 251
  5. 211
  6. 191
  7. 185
  8. 210
  9. 181
  10. 180
  11. 165
  12. 246
  13. 141
  14. 207
  15. 197
  16. 127
  17. 220
  18. 269
  19. 207
  20. 180
  21. 247
  22. 182
  23. 220
  24. 164
  25. 163
  26. 257
  27. 217
  28. 222
  29. 175
  30. 104
  31. 160
  32. 154
  33. 163
  34. 188
  35. 169
  36. 205
  37. 208
  38. 175
  39. 156
  40. 174

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