← Running totals lesson New set →

Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 323 · 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 + 15 + 23 + 40 =
  2. 2.64 + 62 + 78 + 63 =
  3. 3.63 + 78 + 17 + 17 =
  4. 4.42 + 77 + 60 + 46 =
  5. 5.33 + 79 + 79 + 19 =
  6. 6.32 + 63 + 27 + 51 =
  7. 7.23 + 82 + 13 + 57 =
  8. 8.39 + 71 + 26 + 68 =
  9. 9.85 + 48 + 25 + 74 =
  10. 10.29 + 70 + 51 + 58 =
  11. 11.85 + 35 + 69 + 24 =
  12. 12.81 + 27 + 65 + 14 =
  13. 13.38 + 18 + 79 + 29 =
  14. 14.67 + 82 + 67 + 55 =
  15. 15.38 + 50 + 28 + 44 =
  16. 16.17 + 26 + 54 + 42 =
  17. 17.73 + 78 + 57 + 19 =
  18. 18.67 + 32 + 54 + 53 =
  19. 19.22 + 61 + 41 + 67 =
  20. 20.88 + 19 + 44 + 72 =
  21. 21.77 + 27 + 27 + 31 =
  22. 22.52 + 70 + 30 + 39 =
  23. 23.13 + 26 + 32 + 29 =
  24. 24.71 + 41 + 48 + 20 =
  25. 25.38 + 27 + 21 + 23 =
  26. 26.79 + 50 + 31 + 77 =
  27. 27.84 + 32 + 88 + 44 =
  28. 28.50 + 53 + 47 + 22 =
  29. 29.89 + 45 + 45 + 60 =
  30. 30.76 + 28 + 63 + 42 =
  31. 31.31 + 72 + 11 + 26 =
  32. 32.69 + 82 + 44 + 83 =
  33. 33.57 + 36 + 36 + 46 =
  34. 34.75 + 84 + 15 + 24 =
  35. 35.15 + 38 + 23 + 25 =
  36. 36.32 + 12 + 23 + 25 =
  37. 37.22 + 32 + 38 + 63 =
  38. 38.45 + 85 + 30 + 46 =
  39. 39.65 + 39 + 63 + 62 =
  40. 40.39 + 43 + 63 + 41 =

Answer key

  1. 115
  2. 267
  3. 175
  4. 225
  5. 210
  6. 173
  7. 175
  8. 204
  9. 232
  10. 208
  11. 213
  12. 187
  13. 164
  14. 271
  15. 160
  16. 139
  17. 227
  18. 206
  19. 191
  20. 223
  21. 162
  22. 191
  23. 100
  24. 180
  25. 109
  26. 237
  27. 248
  28. 172
  29. 239
  30. 209
  31. 140
  32. 278
  33. 175
  34. 198
  35. 101
  36. 92
  37. 155
  38. 206
  39. 229
  40. 186

Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths