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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 462 · 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 + 29 + 56 + 54 =
  2. 2.53 + 31 + 43 + 63 =
  3. 3.35 + 23 + 45 + 21 =
  4. 4.21 + 72 + 60 + 50 =
  5. 5.38 + 18 + 75 + 83 =
  6. 6.54 + 32 + 59 + 75 =
  7. 7.55 + 20 + 37 + 74 =
  8. 8.67 + 69 + 66 + 77 =
  9. 9.56 + 41 + 78 + 21 =
  10. 10.68 + 41 + 62 + 53 =
  11. 11.81 + 89 + 48 + 69 =
  12. 12.36 + 85 + 60 + 55 =
  13. 13.22 + 55 + 55 + 55 =
  14. 14.85 + 63 + 18 + 27 =
  15. 15.23 + 17 + 16 + 70 =
  16. 16.27 + 58 + 18 + 55 =
  17. 17.31 + 60 + 55 + 78 =
  18. 18.42 + 19 + 26 + 18 =
  19. 19.74 + 33 + 70 + 30 =
  20. 20.12 + 27 + 34 + 28 =
  21. 21.13 + 45 + 16 + 22 =
  22. 22.17 + 39 + 52 + 84 =
  23. 23.76 + 11 + 32 + 49 =
  24. 24.28 + 24 + 27 + 31 =
  25. 25.75 + 86 + 45 + 20 =
  26. 26.28 + 21 + 67 + 65 =
  27. 27.14 + 16 + 28 + 70 =
  28. 28.52 + 47 + 49 + 37 =
  29. 29.23 + 23 + 23 + 69 =
  30. 30.63 + 86 + 47 + 63 =
  31. 31.11 + 58 + 60 + 89 =
  32. 32.14 + 73 + 86 + 71 =
  33. 33.18 + 58 + 25 + 31 =
  34. 34.35 + 24 + 59 + 15 =
  35. 35.32 + 18 + 28 + 43 =
  36. 36.75 + 24 + 23 + 70 =
  37. 37.14 + 14 + 30 + 21 =
  38. 38.14 + 58 + 23 + 35 =
  39. 39.56 + 74 + 47 + 61 =
  40. 40.81 + 33 + 38 + 49 =

Answer key

  1. 183
  2. 190
  3. 124
  4. 203
  5. 214
  6. 220
  7. 186
  8. 279
  9. 196
  10. 224
  11. 287
  12. 236
  13. 187
  14. 193
  15. 126
  16. 158
  17. 224
  18. 105
  19. 207
  20. 101
  21. 96
  22. 192
  23. 168
  24. 110
  25. 226
  26. 181
  27. 128
  28. 185
  29. 138
  30. 259
  31. 218
  32. 244
  33. 132
  34. 133
  35. 121
  36. 192
  37. 79
  38. 130
  39. 238
  40. 201

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