Grade
5
Mobile Math: Number Hunter
Look at the mobile below. What do you notice? What do you wonder?
Find the missing values so that the mobile is balanced.
![A balanced mobile with a value of 216 has 2 strings. The left string has 3 orange triangles. The right string has 2 red squares and 1 yellow hexagon. The value of the hexagon is 38.](/sites/default/files/inline-images/nf2yDmKUyusTLKnD7ra517mF4hgGTb8G7Y0NfbkisCbiS5uuV8.png)
You decide the total value of the mobile. What values should each of the shapes have so the mobile is balanced?
![A balanced mobile with an unknown value has 2 strings. The left string has 3 orange triangles. The right string has 2 red squares and 1 yellow hexagon. The value of the hexagon is 38.](/sites/default/files/inline-images/uSbxLUjLCaod1dzVaQXHQNCX2zoQ2oRlxlUvu2VVnxPExDOChn.png)
If the value of the orange triangle is 246, how can you change the value of the other shapes so that the mobile remains balanced?
![A balanced mobile with an unknown value has 2 strings. The left string has 3 orange triangles. The right string has 2 red squares and 1 yellow hexagon. The value of each triangle is 246.](/sites/default/files/inline-images/qLCXhD16mllcxvDYEwv4oLixYIpsOHDxhAay4i1bIfvPKq8Kmz.png)
Printable Version
Google doc for printing and copying
Reference for Educators
Sample problems and solutions