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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 460 · 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. 1.67 + 86 + 58 + 36 =
  2. 2.82 + 80 + 71 + 71 =
  3. 3.89 + 67 + 31 + 27 =
  4. 4.76 + 54 + 25 + 48 =
  5. 5.57 + 40 + 15 + 14 =
  6. 6.47 + 89 + 18 + 53 =
  7. 7.41 + 83 + 13 + 72 =
  8. 8.38 + 39 + 49 + 76 =
  9. 9.80 + 26 + 46 + 89 =
  10. 10.43 + 59 + 34 + 43 =
  11. 11.12 + 27 + 41 + 48 =
  12. 12.72 + 31 + 58 + 16 =
  13. 13.35 + 35 + 60 + 43 =
  14. 14.36 + 18 + 59 + 13 =
  15. 15.17 + 41 + 39 + 41 =
  16. 16.35 + 12 + 61 + 46 =
  17. 17.72 + 34 + 88 + 67 =
  18. 18.36 + 42 + 89 + 16 =
  19. 19.85 + 70 + 23 + 67 =
  20. 20.62 + 56 + 36 + 75 =
  21. 21.75 + 42 + 88 + 85 =
  22. 22.23 + 20 + 13 + 76 =
  23. 23.71 + 11 + 68 + 13 =
  24. 24.51 + 32 + 30 + 33 =
  25. 25.20 + 19 + 77 + 12 =
  26. 26.11 + 41 + 57 + 29 =
  27. 27.36 + 17 + 12 + 60 =
  28. 28.43 + 62 + 28 + 68 =
  29. 29.43 + 17 + 13 + 34 =
  30. 30.59 + 75 + 65 + 38 =
  31. 31.71 + 35 + 55 + 79 =
  32. 32.24 + 12 + 76 + 76 =
  33. 33.50 + 19 + 87 + 18 =
  34. 34.46 + 79 + 21 + 77 =
  35. 35.58 + 51 + 73 + 40 =
  36. 36.52 + 24 + 23 + 38 =
  37. 37.14 + 65 + 49 + 84 =
  38. 38.61 + 67 + 32 + 37 =
  39. 39.30 + 13 + 37 + 55 =
  40. 40.63 + 66 + 17 + 60 =

Answer key

  1. 247
  2. 304
  3. 214
  4. 203
  5. 126
  6. 207
  7. 209
  8. 202
  9. 241
  10. 179
  11. 128
  12. 177
  13. 173
  14. 126
  15. 138
  16. 154
  17. 261
  18. 183
  19. 245
  20. 229
  21. 290
  22. 132
  23. 163
  24. 146
  25. 128
  26. 138
  27. 125
  28. 201
  29. 107
  30. 237
  31. 240
  32. 188
  33. 174
  34. 223
  35. 222
  36. 137
  37. 212
  38. 197
  39. 135
  40. 206

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