Solve word problems with multiples of ten.  Decompose multiples of ten to multiply. 

Problem

A volunteer group is planting trees at 5 different parks. They planted 90 trees at each park.
How many trees did the group plant in all?
  • Your answer should be
  • an integer, like 6
  • an exact decimal, like 0, point, 75
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
trees