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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 71 · 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. 1.37 + 41 + 50 + 17 =
  2. 2.55 + 24 + 63 + 52 =
  3. 3.38 + 15 + 74 + 72 =
  4. 4.38 + 78 + 20 + 73 =
  5. 5.26 + 65 + 45 + 23 =
  6. 6.33 + 59 + 86 + 38 =
  7. 7.35 + 20 + 89 + 41 =
  8. 8.86 + 13 + 78 + 38 =
  9. 9.50 + 28 + 29 + 66 =
  10. 10.64 + 73 + 74 + 66 =
  11. 11.76 + 44 + 62 + 62 =
  12. 12.44 + 39 + 66 + 13 =
  13. 13.66 + 69 + 48 + 89 =
  14. 14.11 + 52 + 12 + 37 =
  15. 15.74 + 68 + 57 + 23 =
  16. 16.19 + 27 + 82 + 29 =
  17. 17.37 + 17 + 85 + 60 =
  18. 18.54 + 56 + 13 + 13 =
  19. 19.72 + 12 + 64 + 31 =
  20. 20.33 + 52 + 31 + 36 =
  21. 21.63 + 46 + 62 + 43 =
  22. 22.30 + 61 + 12 + 53 =
  23. 23.57 + 14 + 88 + 21 =
  24. 24.56 + 14 + 18 + 52 =
  25. 25.81 + 54 + 28 + 17 =
  26. 26.87 + 88 + 63 + 64 =
  27. 27.19 + 27 + 16 + 44 =
  28. 28.15 + 65 + 27 + 42 =
  29. 29.57 + 35 + 37 + 47 =
  30. 30.29 + 72 + 29 + 54 =
  31. 31.80 + 42 + 75 + 25 =
  32. 32.42 + 73 + 24 + 45 =
  33. 33.52 + 58 + 77 + 68 =
  34. 34.72 + 88 + 78 + 86 =
  35. 35.42 + 18 + 73 + 38 =
  36. 36.85 + 60 + 40 + 89 =
  37. 37.26 + 86 + 74 + 21 =
  38. 38.75 + 59 + 24 + 48 =
  39. 39.69 + 56 + 47 + 66 =
  40. 40.28 + 33 + 42 + 70 =

Answer key

  1. 145
  2. 194
  3. 199
  4. 209
  5. 159
  6. 216
  7. 185
  8. 215
  9. 173
  10. 277
  11. 244
  12. 162
  13. 272
  14. 112
  15. 222
  16. 157
  17. 199
  18. 136
  19. 179
  20. 152
  21. 214
  22. 156
  23. 180
  24. 140
  25. 180
  26. 302
  27. 106
  28. 149
  29. 176
  30. 184
  31. 222
  32. 184
  33. 255
  34. 324
  35. 171
  36. 274
  37. 207
  38. 206
  39. 238
  40. 173

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