Recycling paper

Screen Shot 2015-11-09 at 10.15.14 AMGrade level: 4 – 5th grades

Skills: Multiplication & Division

Related environmental issues: Reduce, reuse & recycle

Area level: National

Recycling paper prevents many trees from being cut down for paper.  It is reported that we can save one tree by recycling a stack of newspaper 3 feet high.

  1. Sean recycled a stack of newspaper 21 feet high.  How many trees can Jack save by recycling the newspeper?

  2. To save 13 trees, a stack of how many feet of newspaper do you need to recycle?
  3. Maya wants to save 18 trees. She gathered newspaper to recycle and made a stack of newspaper 56 feet high.  Did she gather enough newspaper? Explain.

Source: Recycle Across America


Answer keys

  1. 7 trees (21/3=7)
  2. 39 feet (13×3=39)
  3. Yes. She need a stack of newspaper 54 feet high (18×3=54) to save 18 trees. She gathered a stack of newspaper 56 feet high so she has enough newspaper.