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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 744 · 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. 1.81 + 58 + 74 + 62 =
  2. 2.63 + 30 + 31 + 50 =
  3. 3.13 + 48 + 13 + 60 =
  4. 4.83 + 22 + 67 + 86 =
  5. 5.69 + 65 + 53 + 23 =
  6. 6.84 + 45 + 59 + 45 =
  7. 7.59 + 30 + 68 + 54 =
  8. 8.86 + 84 + 68 + 12 =
  9. 9.11 + 29 + 85 + 19 =
  10. 10.58 + 82 + 43 + 84 =
  11. 11.13 + 44 + 72 + 70 =
  12. 12.89 + 40 + 35 + 67 =
  13. 13.70 + 66 + 84 + 25 =
  14. 14.16 + 28 + 62 + 55 =
  15. 15.73 + 45 + 36 + 21 =
  16. 16.58 + 85 + 51 + 53 =
  17. 17.44 + 28 + 61 + 66 =
  18. 18.11 + 25 + 27 + 55 =
  19. 19.66 + 86 + 54 + 73 =
  20. 20.50 + 63 + 39 + 11 =
  21. 21.32 + 32 + 44 + 65 =
  22. 22.44 + 80 + 14 + 66 =
  23. 23.24 + 55 + 42 + 75 =
  24. 24.12 + 86 + 61 + 67 =
  25. 25.79 + 17 + 11 + 75 =
  26. 26.20 + 42 + 19 + 40 =
  27. 27.28 + 53 + 85 + 80 =
  28. 28.88 + 81 + 35 + 20 =
  29. 29.50 + 59 + 76 + 77 =
  30. 30.48 + 84 + 40 + 27 =
  31. 31.64 + 25 + 19 + 83 =
  32. 32.35 + 12 + 12 + 50 =
  33. 33.46 + 84 + 19 + 16 =
  34. 34.40 + 61 + 50 + 23 =
  35. 35.76 + 69 + 37 + 11 =
  36. 36.66 + 47 + 36 + 57 =
  37. 37.61 + 24 + 62 + 31 =
  38. 38.67 + 58 + 66 + 14 =
  39. 39.24 + 35 + 18 + 48 =
  40. 40.25 + 63 + 42 + 64 =

Answer key

  1. 275
  2. 174
  3. 134
  4. 258
  5. 210
  6. 233
  7. 211
  8. 250
  9. 144
  10. 267
  11. 199
  12. 231
  13. 245
  14. 161
  15. 175
  16. 247
  17. 199
  18. 118
  19. 279
  20. 163
  21. 173
  22. 204
  23. 196
  24. 226
  25. 182
  26. 121
  27. 246
  28. 224
  29. 262
  30. 199
  31. 191
  32. 109
  33. 165
  34. 174
  35. 193
  36. 206
  37. 178
  38. 205
  39. 125
  40. 194

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