John needs to cut three strips of wood, 25.5 cm, 15.3 cm, and 9.25 cm long. He has a strip that is 72 cm long. How long will the leftover piece be after he cuts what he needs?

He will have a 21.95 long strip of wood. How you can double check is by doing this:

You can subtract 25.5 from 72, to get 46.5. Next, subtract 15.3 from 43.5, to get 31.2. Finally, subtract 9.25 from 31.2 to get your final answer: 21.95.

Hope this helps, and good luck!!