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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 202 · 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. 1.30 + 59 + 31 + 31 =
  2. 2.39 + 42 + 81 + 27 =
  3. 3.23 + 76 + 89 + 37 =
  4. 4.57 + 68 + 87 + 69 =
  5. 5.16 + 72 + 20 + 18 =
  6. 6.61 + 25 + 32 + 89 =
  7. 7.27 + 54 + 77 + 15 =
  8. 8.67 + 52 + 36 + 81 =
  9. 9.13 + 58 + 39 + 24 =
  10. 10.53 + 30 + 89 + 43 =
  11. 11.20 + 26 + 87 + 83 =
  12. 12.52 + 17 + 73 + 42 =
  13. 13.87 + 58 + 22 + 24 =
  14. 14.71 + 18 + 65 + 49 =
  15. 15.21 + 26 + 80 + 56 =
  16. 16.80 + 80 + 52 + 61 =
  17. 17.13 + 19 + 73 + 43 =
  18. 18.69 + 21 + 89 + 25 =
  19. 19.66 + 18 + 24 + 62 =
  20. 20.79 + 25 + 61 + 62 =
  21. 21.25 + 41 + 78 + 32 =
  22. 22.51 + 61 + 24 + 25 =
  23. 23.81 + 19 + 40 + 82 =
  24. 24.16 + 55 + 85 + 30 =
  25. 25.17 + 37 + 20 + 71 =
  26. 26.23 + 53 + 78 + 12 =
  27. 27.19 + 19 + 73 + 54 =
  28. 28.23 + 80 + 48 + 55 =
  29. 29.48 + 49 + 14 + 44 =
  30. 30.18 + 52 + 52 + 63 =
  31. 31.70 + 57 + 75 + 37 =
  32. 32.19 + 45 + 60 + 58 =
  33. 33.88 + 29 + 78 + 20 =
  34. 34.42 + 76 + 56 + 17 =
  35. 35.44 + 37 + 41 + 14 =
  36. 36.12 + 59 + 53 + 32 =
  37. 37.69 + 15 + 12 + 39 =
  38. 38.89 + 75 + 70 + 34 =
  39. 39.35 + 59 + 45 + 84 =
  40. 40.30 + 58 + 81 + 43 =

Answer key

  1. 151
  2. 189
  3. 225
  4. 281
  5. 126
  6. 207
  7. 173
  8. 236
  9. 134
  10. 215
  11. 216
  12. 184
  13. 191
  14. 203
  15. 183
  16. 273
  17. 148
  18. 204
  19. 170
  20. 227
  21. 176
  22. 161
  23. 222
  24. 186
  25. 145
  26. 166
  27. 165
  28. 206
  29. 155
  30. 185
  31. 239
  32. 182
  33. 215
  34. 191
  35. 136
  36. 156
  37. 135
  38. 268
  39. 223
  40. 212

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