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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 747 · 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. 1.24 + 35 + 46 + 37 =
  2. 2.32 + 70 + 88 + 28 =
  3. 3.15 + 77 + 85 + 73 =
  4. 4.47 + 42 + 66 + 76 =
  5. 5.39 + 61 + 56 + 18 =
  6. 6.36 + 65 + 78 + 17 =
  7. 7.44 + 72 + 33 + 87 =
  8. 8.63 + 30 + 32 + 84 =
  9. 9.13 + 70 + 50 + 49 =
  10. 10.14 + 68 + 78 + 40 =
  11. 11.26 + 76 + 72 + 54 =
  12. 12.63 + 43 + 35 + 28 =
  13. 13.79 + 15 + 75 + 80 =
  14. 14.36 + 31 + 40 + 16 =
  15. 15.33 + 73 + 14 + 67 =
  16. 16.74 + 76 + 77 + 11 =
  17. 17.14 + 59 + 61 + 53 =
  18. 18.78 + 44 + 79 + 34 =
  19. 19.73 + 19 + 54 + 76 =
  20. 20.11 + 72 + 40 + 87 =
  21. 21.85 + 57 + 54 + 35 =
  22. 22.76 + 70 + 57 + 71 =
  23. 23.48 + 51 + 37 + 36 =
  24. 24.87 + 39 + 47 + 66 =
  25. 25.37 + 40 + 53 + 24 =
  26. 26.44 + 25 + 30 + 36 =
  27. 27.74 + 34 + 75 + 20 =
  28. 28.76 + 11 + 74 + 79 =
  29. 29.38 + 23 + 42 + 75 =
  30. 30.22 + 43 + 11 + 33 =
  31. 31.78 + 55 + 28 + 24 =
  32. 32.31 + 59 + 16 + 70 =
  33. 33.12 + 36 + 38 + 81 =
  34. 34.40 + 67 + 20 + 46 =
  35. 35.13 + 43 + 37 + 60 =
  36. 36.67 + 77 + 25 + 19 =
  37. 37.31 + 44 + 63 + 25 =
  38. 38.77 + 27 + 15 + 57 =
  39. 39.61 + 25 + 29 + 74 =
  40. 40.43 + 27 + 44 + 76 =

Answer key

  1. 142
  2. 218
  3. 250
  4. 231
  5. 174
  6. 196
  7. 236
  8. 209
  9. 182
  10. 200
  11. 228
  12. 169
  13. 249
  14. 123
  15. 187
  16. 238
  17. 187
  18. 235
  19. 222
  20. 210
  21. 231
  22. 274
  23. 172
  24. 239
  25. 154
  26. 135
  27. 203
  28. 240
  29. 178
  30. 109
  31. 185
  32. 176
  33. 167
  34. 173
  35. 153
  36. 188
  37. 163
  38. 176
  39. 189
  40. 190

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