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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 693 · 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. 1.87 + 48 + 38 + 61 =
  2. 2.63 + 83 + 65 + 20 =
  3. 3.67 + 19 + 17 + 11 =
  4. 4.65 + 31 + 77 + 29 =
  5. 5.22 + 25 + 41 + 44 =
  6. 6.48 + 82 + 83 + 48 =
  7. 7.12 + 75 + 82 + 36 =
  8. 8.19 + 29 + 81 + 86 =
  9. 9.27 + 14 + 28 + 24 =
  10. 10.80 + 89 + 20 + 62 =
  11. 11.19 + 18 + 54 + 20 =
  12. 12.17 + 86 + 55 + 27 =
  13. 13.46 + 29 + 80 + 38 =
  14. 14.29 + 38 + 27 + 66 =
  15. 15.54 + 55 + 65 + 23 =
  16. 16.34 + 53 + 38 + 22 =
  17. 17.78 + 74 + 49 + 48 =
  18. 18.30 + 50 + 39 + 35 =
  19. 19.35 + 19 + 27 + 73 =
  20. 20.62 + 58 + 79 + 55 =
  21. 21.78 + 18 + 55 + 73 =
  22. 22.68 + 39 + 15 + 22 =
  23. 23.26 + 75 + 66 + 32 =
  24. 24.84 + 17 + 67 + 21 =
  25. 25.63 + 57 + 78 + 24 =
  26. 26.67 + 44 + 50 + 31 =
  27. 27.40 + 38 + 25 + 53 =
  28. 28.72 + 18 + 33 + 22 =
  29. 29.24 + 13 + 39 + 41 =
  30. 30.81 + 47 + 16 + 50 =
  31. 31.36 + 50 + 77 + 24 =
  32. 32.26 + 22 + 40 + 59 =
  33. 33.60 + 73 + 69 + 66 =
  34. 34.44 + 22 + 34 + 46 =
  35. 35.61 + 22 + 36 + 79 =
  36. 36.55 + 26 + 87 + 19 =
  37. 37.21 + 56 + 34 + 29 =
  38. 38.68 + 72 + 54 + 63 =
  39. 39.14 + 59 + 25 + 32 =
  40. 40.69 + 32 + 34 + 30 =

Answer key

  1. 234
  2. 231
  3. 114
  4. 202
  5. 132
  6. 261
  7. 205
  8. 215
  9. 93
  10. 251
  11. 111
  12. 185
  13. 193
  14. 160
  15. 197
  16. 147
  17. 249
  18. 154
  19. 154
  20. 254
  21. 224
  22. 144
  23. 199
  24. 189
  25. 222
  26. 192
  27. 156
  28. 145
  29. 117
  30. 194
  31. 187
  32. 147
  33. 268
  34. 146
  35. 198
  36. 187
  37. 140
  38. 257
  39. 130
  40. 165

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