Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Long Division

2,989 views

Published on

A demonstration of long division

Published in: Education, Sports
  • Be the first to comment

  • Be the first to like this

Long Division

  1. 1. Old-fashioned long division<br />1 7<br />8 7 9 1<br />
  2. 2. Old-fashioned long division<br />We need the 17 times-table.<br />This can be obtained easily in a couple of ways:<br />1 7<br />8 7 9 1<br />
  3. 3. Old-fashioned long division<br />We need the 17 times-table.<br />This can be obtained easily in a couple of ways:<br />1 7<br />8 7 9 1<br />7<br />14<br />21<br />28<br />35<br />42<br />49<br />56<br />63<br />70<br />[1] - Compare it with the 7 times-table<br />
  4. 4. Old-fashioned long division<br />We need the 17 times-table.<br />This can be obtained easily in a couple of ways:<br />1 7<br />8 7 9 1<br />+10<br />+20<br />+30<br />+40<br />+50<br />+60<br />+70<br />+80<br />+90<br />+100<br />7<br />14<br />21<br />28<br />35<br />42<br />49<br />56<br />63<br />70<br />[1] - Compare it with the 7 times-table<br />
  5. 5. Old-fashioned long division<br />We need the 17 times-table.<br />This can be obtained easily in a couple of ways:<br />1 7<br />8 7 9 1<br />[1] - Compare it with the 7 times-table<br />17<br />34<br />51<br />68<br />85<br />102<br />119<br />136<br />153<br />170<br />+10<br />+20<br />+30<br />+40<br />+50<br />+60<br />+70<br />+80<br />+90<br />+100<br />7<br />14<br />21<br />28<br />35<br />42<br />49<br />56<br />63<br />70<br />
  6. 6. Old-fashioned long division<br />We need the 17 times-table.<br />This can be obtained easily in a couple of ways:<br />1 7<br />8 7 9 1<br />[2] – Repeatedly add 17’s. <br />17 = 20 – 3<br />
  7. 7. Old-fashioned long division<br />We need the 17 times-table.<br />This can be obtained easily in a couple of ways:<br />1 7<br />8 7 9 1<br />[2] – Repeatedly add 17’s. <br />17 = 20 – 3<br />Increase the front by 2 and decrease the back by 3<br />
  8. 8. Old-fashioned long division<br />We need the 17 times-table.<br />This can be obtained easily in a couple of ways:<br />1 7<br />8 7 9 1<br />17<br />34<br />51<br />68<br />85<br />102<br />119<br />136<br />153<br />170<br />[2] – Repeatedly add 17’s. <br />17 = 20 – 3<br />Increase the front by 2 and decrease the back by 3<br />
  9. 9. Old-fashioned long division<br />We need the 17 times-table.<br />This can be obtained easily in a couple of ways:<br />1 7<br />8 7 9 1<br />17<br />34<br />51<br />68<br />85<br />102<br />119<br />136<br />153<br />170<br />[2] – Repeatedly add 17’s. <br />17 = 20 – 3<br />Increase the front by 2 and decrease the back by 3<br />Get these two values by simple adding 17.<br />
  10. 10. Old-fashioned long division<br />1 7<br />8 7 9 1<br />17<br />34<br />51<br />68<br />85<br />102<br />119<br />136<br />153<br />170<br />
  11. 11. Old-fashioned long division<br />1 7<br />8 7 9 1<br />_<br />8 50 0<br />50 0<br />2 9 1<br />17<br />34<br />51<br />68<br />85<br />102<br />119<br />136<br />153<br />170<br /> 500<br />
  12. 12. Old-fashioned long division<br />1 7<br />8 7 9 1<br />_<br />8 50 0<br />50 0<br />2 9 1<br />_<br />1 70<br />10<br />17<br />34<br />51<br />68<br />85<br />102<br />119<br />136<br />153<br />170<br />1 2 1<br /> 510<br />
  13. 13. Old-fashioned long division<br />1 7<br />8 7 9 1<br />_<br />8 50 0<br />50 0<br />2 9 1<br />_<br />1 70<br />10<br />17<br />34<br />51<br />68<br />85<br />102<br />119<br />136<br />153<br />170<br />1 2 1<br />_<br />1 1 9<br />7<br />2<br /> 517<br />
  14. 14. Old-fashioned long division<br />1 7<br />8 7 9 1<br />_<br />8 50 0<br />50 0<br />2 9 1<br />_<br />1 70<br />10<br />17<br />34<br />51<br />68<br />85<br />102<br />119<br />136<br />153<br />170<br />1 2 1<br />_<br />1 1 9<br />7<br />2. 0<br />_<br />1. 7<br />0.1<br />0. 3<br /> 517.1<br />
  15. 15. Old-fashioned long division<br />1 7<br />8 7 9 1<br />_<br />8 5 0 0<br />5 0 0<br />2 9 1<br />_<br />1 7 0<br />1 0<br />17<br />34<br />51<br />68<br />85<br />102<br />119<br />136<br />153<br />170<br />1 2 1<br />_<br />1 1 9<br />7<br />2. 0<br />_<br />1. 7<br />0.1<br />0. 3 0<br />_<br />0. 1 7<br />0.01<br />.....Etc<br /> 517.11...<br />
  16. 16. END<br />

×