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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 197 · 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. 1.18 + 14 + 14 + 76 =
  2. 2.14 + 71 + 46 + 56 =
  3. 3.68 + 63 + 33 + 14 =
  4. 4.20 + 58 + 14 + 52 =
  5. 5.73 + 58 + 74 + 73 =
  6. 6.87 + 27 + 59 + 23 =
  7. 7.16 + 85 + 56 + 34 =
  8. 8.21 + 35 + 63 + 61 =
  9. 9.32 + 32 + 85 + 68 =
  10. 10.77 + 77 + 85 + 29 =
  11. 11.68 + 72 + 44 + 62 =
  12. 12.22 + 29 + 72 + 54 =
  13. 13.67 + 71 + 21 + 14 =
  14. 14.41 + 14 + 18 + 53 =
  15. 15.13 + 67 + 56 + 19 =
  16. 16.11 + 32 + 73 + 25 =
  17. 17.87 + 76 + 82 + 76 =
  18. 18.38 + 30 + 38 + 41 =
  19. 19.12 + 63 + 30 + 87 =
  20. 20.87 + 23 + 54 + 42 =
  21. 21.17 + 47 + 89 + 12 =
  22. 22.38 + 46 + 45 + 78 =
  23. 23.89 + 60 + 38 + 59 =
  24. 24.16 + 75 + 30 + 21 =
  25. 25.74 + 64 + 15 + 45 =
  26. 26.77 + 40 + 19 + 60 =
  27. 27.29 + 37 + 33 + 29 =
  28. 28.35 + 45 + 56 + 70 =
  29. 29.67 + 79 + 15 + 15 =
  30. 30.52 + 72 + 79 + 13 =
  31. 31.49 + 22 + 26 + 20 =
  32. 32.33 + 88 + 24 + 22 =
  33. 33.60 + 13 + 56 + 44 =
  34. 34.44 + 55 + 20 + 78 =
  35. 35.57 + 86 + 29 + 13 =
  36. 36.20 + 54 + 65 + 66 =
  37. 37.42 + 64 + 41 + 38 =
  38. 38.89 + 41 + 45 + 36 =
  39. 39.11 + 57 + 81 + 66 =
  40. 40.44 + 67 + 66 + 79 =

Answer key

  1. 122
  2. 187
  3. 178
  4. 144
  5. 278
  6. 196
  7. 191
  8. 180
  9. 217
  10. 268
  11. 246
  12. 177
  13. 173
  14. 126
  15. 155
  16. 141
  17. 321
  18. 147
  19. 192
  20. 206
  21. 165
  22. 207
  23. 246
  24. 142
  25. 198
  26. 196
  27. 128
  28. 206
  29. 176
  30. 216
  31. 117
  32. 167
  33. 173
  34. 197
  35. 185
  36. 205
  37. 185
  38. 211
  39. 215
  40. 256

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